OverKill

OverKill
Participation Information
Comedy Central Seasons	Season 1.0 Season 2.0 Season 3.0 Season 4.0 Season 5.0
Team Information
Team	Team Coolrobots
Team Members	Christian Carlberg
From	Santa Monica, CA
Other Entries	Mecha Rampage, OverDrive, Minion, Toe-Crusher, Dreadnought, Knee-Breaker, UpperCut, TriDent, Nasty
Associated Robots	Yeti, Chunk (Christian Carlberg)
Robot Statistics
Weight	208lbs
Weapons	Overhead swinging knife
Statistics correct as of its most recent appearance on the show, or if not applicable, qualification attempt.

For the ShowBot which competes at BattleBots: Destruct-A-Thon live events, see OverKill (ShowBot).

OverKill was a heavyweight robot built by the experienced Team Coolrobots which competed in all five televised seasons of Comedy Central BattleBots. The team had previous success with their superheavyweight robot, Minion.

OverKill was a standard wedge-shaped robot with two large drive wheels. Its main weapon was a huge swinging knife blade, referred to as a 'Rambo knife.' The knife was attached to the main body of the robot, which rotated through 180 degrees to swing it overhead and slam down onto opponents, though only if the robot was driving toward the weapon. While the weapon did not cause any significant damage, the visual appeal and wide attack range were heavily influential in judges' decisions. The knife blade was made of a high-tensile steel, effectively making it a 'spinner killer' as spinners that hit the blade would often end up breaking their own weapon. OverKill proved to be one of the most reliable and durable robots in the competition, only ever losing by way of judges' decisions. For Season 2.0, OverKill received some upgrades in response to its losses in the previous season. These included foam-filled tires to prevent future punctures and a tougher wedge which was bolted to the main chassis, complete with side panels.

Minor modifications were made to OverKill for Season 3.0, mainly concerning its aesthetics as Team Coolrobots began a sponsorship contract with Wizards of the Coast, who supplied the team's robots with decals advertising its Magic: The Gathering trading card series. OverKill remained visually similar for its final two seasons.

Though OverKill never won a championship in its career, it still enjoyed high levels of success. It tied with Punjar for the winner of the heavyweight rumble in Season 2.0 after having dominated almost the entire battle. In addition, it finished as runner-up in the heavyweight competition in Season 4.0 and ended the first run of BattleBots as the No.2 ranked heavyweight. OverKill was essentially a scaled up version of the team's lightweight robot Toe-Crusher and an updated version of the team's former heavyweight Slugger. Christian Carlberg was fond of Toe-Crusher's performance and the idea of a giant knife weapon, thus OverKill was created.

Team Coolrobots also returned for the ABC and Discovery reboot seasons, entering with OverDrive, Mecha Rampage and Yeti. During a Reddit AMA, it was confirmed that the team still own all three Comedy Central era robots, with Carlberg himself owning two spares of OverKill's blade in storage. In April 2022, Christian Carlberg gifted OverKill's iconic spare blade to Bot Bash Party Crew, who compete with Skorpios.

In January 2023, it was confirmed that OverKill would return for BattleBots: Destruct-A-Thon live shows, alongside a number of other Comedy Central era robots. For more on that specific robot, see here. Christian Carlberg confirmed in November 2025 that the original OverKill would be displayed at Destruct-A-Thon.

OverKill in 2021, still under Christian Carlberg's ownership.

Christian Carlberg and the team posing with OverKill.

Christian and the team with OverKill during Season 3.0.

Team Coolrobots with OverKill.

Overkill being prepped for its official picture for Season 2.0.

Close-up of Overkill's wedge at Season 2.0.

Outside BattleBots

OverKill took on Tazbot in an exhibition battle for Hasbro IBM in a dedicated, smaller arena. The winner of this is not known. Other robots which featured include Diesector, Vlad the Impaler, Ginsu, BioHazard, Ziggo and Toe-Crusher. OverKill also featured on the CSI: Crime Scene Investigation episode titled 'Precious Metal', alongside several other robots such as Diesector.

In November 2025, the original OverKill was displayed at a Girls Scouts STEM Exhibition in November 2025.

OverKill on display in November 2025.

OverKill battles Tazbot in an Hasbro IBM exhibition match.

OverKill at the Hasbro Showroom arena.

OverKill on set of CSI: Crime Scene Investigation.

Another view of OverKill with Diesector.

Another view of OverKill with Diesector.

Robot History

Season 1.0
OverKill vs. frenZy OverKill fighting frenZy. OverKill's first ever fight in the BattleBox was against the veteran bot frenZy. Both robots steadily approached each other, looking unsure to attack. OverKill finally broke the tension with a blow to frenZy's top, causing both robots to flail their weaponry aimlessly as frenZy got its first hammer blow to the front of OverKill. The two rammed each other following continuous attacking from both sides when OverKill pushed frenZy onto the hellraiser. frenZy retaliated by pushing OverKill onto the killsaw, sending it flying and retreating. OverKill came back however, and delivered a massive blow to its opponent who likewise returned the favor. frenZy then pushed OverKill into the corner and resumed pounding on its opponent, delivering four blows. This back and forth hitting continued for a while before OverKill ended the fight by getting a strong slam onto frenZy. This move decided the fight in OverKill's favor and won with a 7-2 judges' decision.
OverKill vs. Vlad the Impaler Vlad the Impaler flips OverKill. In the quarterfinals, OverKill faced the defending champion, Vlad the Impaler. Both robots approached timidly, until OverKill decided to charge at Vlad the Impaler and swing its knife blade at the top of Vlad's armor. Vlad the Impaler then pushed OverKill across the BattleBox before backing off. OverKill then continued to strike Vlad the Impaler across the top, causing various scrapes and dents in Vlad's armor. Vlad the Impaler retaliated by ramming OverKill onto the killsaws, then got underneath OverKill and bent the wedge armor so much OverKill had to drive on its back. Vlad the Impaler then rammed OverKill again and pushed it back onto the killsaws, which split the wedge armor of OverKill in half. Vlad now clearly had the upper hand, almost flipping OverKill upside down with its forks. OverKill then began swinging its blade quickly in desperation, but none of the strikes landed a blow on Vlad the Impaler. In dramatic fashion, OverKill then drove itself over the killsaws and flipped itself upside-down, making the knife blade useless from the front. Vlad charged and pushed OverKill into the spikes, further ripping the wedge armor apart. Vlad then rammed OverKill into the arena wall so quickly the arena lexan shook, and it partially damaged the entrance area. This attack damaged OverKill's drivetrain, allowing it to only move backwards and forwards. Vlad the Impaler lifted OverKill back onto its correct side, but it was too little, too late. OverKill's tire became punctured by the killsaws, which further limited motion to only being able to spin forward in a clockwise direction or backwards in a counter-clockwise direction. OverKill languished in the arena corner, before Vlad the Impaler ended the fight with a few more hits. Vlad the Impaler won on an 8-1 judges' decision and OverKill was eliminated from the tournament.
Heavyweight Royal Rumble OverKill also entered the Heavyweight Royal Rumble at the end of the season. It did fairly well at the beginning of the rumble, attacking Knome II with its knife blade, but was eventually immobilized after getting its tires punctured. OverKill lost overall to BioHazard.
Season 2.0
OverKill vs. Iron Eagle OverKill's first fight was up against the Japanese entry Iron Eagle. OverKill approached Iron Eagle immediately, swinging its weapon, before Iron Eagle backed off and retreated into the killsaws. Iron Eagle recovered and started to move around the BattleBox. OverKill got in several good blade hits on Iron Eagle, before Iron Eagle backed up the arena entry ramp, high-centering itself. Unable to move with its wheels off the ground, Iron Eagle was counted out by the referee and OverKill took the win by knockout.
OverKill vs. FrostBite FrostBite pins OverKill against the spikestrip. OverKill moved into the Round of 16, where it faced Team Toad and FrostBite. The two robots met in the middle of the BattleBox and OverKill began attacking FrostBite, before shoving it up against the arena wall. FrostBite then got too close to the killsaws, and took a ride on them a couple times, damaging the drive-train and underside. OverKill then received a shot from the killsaws itself, which was so powerful it launched OverKill onto FrostBite's back. Both robots continued to push each other around, with FrostBite generally getting the upper hand due to having a lower center of gravity and a greater amount of torque. OverKill, however, still attempted to line up for a good weapon hit on FrostBite. A few blows were landed, but minimal damage was done to FrostBite's body shell. After more shoving and hitting, neither robot was able to do a significant amount of damage and the fight went to the judges, who scored a 23-22 decision for FrostBite, eliminating OverKill from the main competition.
Heavyweight Consolation Rumble OverKill returned for the Heavyweight Consolation Rumble towards the end of the season. In the earlier stages of the rumble, it drove around the BattleBox aggressively, getting under Bigger Brother and ramming it into the wall. OverKill then disabled Gammatron's weapon by swinging its blade at it, before damaging Punjar's armor by doing a similar maneuver. However, OverKill was flipped by Surgeon General, which left its blade now useless. OverKill was still able to cause damage though, snapping off Mjollnir's weapon by driving over it and attacking the disabled Mauler, which had been flipped by Bigger Brother earlier on. During the closing stages of the rumble, OverKill began to slow down due to damage it received to its internal components but was still mobile at the end of the rumble. As a result of the earlier carnage, and being one of the few robots moving at the end of the fight, OverKill and Punjar were declared the winners of the consolation rumble and both robots advanced to the Heavyweight Royal Rumble.
Heavyweight Royal Rumble OverKill performed decently in the Heavyweight Royal Rumble, as it was one of many robots still moving in the end, but it lost to Tazbot overall.
Season 3.0
OverKill vs. M.O.E. OverKill's first fight of Season 3.0 came in the Round of 64 up against a heavily-redesigned M.O.E.. For this battle, Team Extreme had constructed a "Voodoo OverKill" out of roller skate wheels and cardboard. M.O.E. drove into OverKill early on, but OverKill got away, taking a hit from the killsaws as it did. OverKill drove around to the side of M.O.E. and pushed it around the BattleBox, but M.O.E. escaped and hit OverKill's wheel with its ditch cutter. However, it did no damage and OverKill continued to push M.O.E. around with its wedge, stopping the ditch cutter in the process. OverKill whacked M.O.E. with its blade and then rammed M.O.E. with the wedge, continuing to use the blade as M.O.E. spun the ditch cutter up to its top speed again. M.O.E. continued to drive after OverKill until it got scooped up by the wedge again, pushed around the BattleBox and whacked by the blade numerous times. M.O.E. finally got the upper hand as it wedged OverKill's blade into the lexan, keeping it from moving, but OverKill managed to free itself. OverKill hit M.O.E. with the blade numerous times until the fight ended. OverKill won on a 28-17 judges' decision and advanced to the Round of 32.
OverKill vs. RoboSapien OverKill rams RoboSapien into the spikestrip. In the Round of 32, OverKill faced RoboSapien. OverKill dominated this fight, getting underneath RoboSapien several times and eventually pinning it under the spike strip. OverKill won by KO at 1:36 and advanced to the Round of 16.
OverKill vs. frenZy OverKill fighting frenZy in Season 3.0. In the Round of 16, OverKill faced frenZy in a rematch from Season 1.0. The fight went the distance and OverKill won on a close 23-22 judges' decision, moving onto the quarter-finals.
OverKill vs. Voltronic OverKill fighting Voltronic. Now in the Top 8 once more, OverKill took on Voltronic. OverKill won the fight on a 30-15 judges' decision and advanced to the semifinals.
OverKill vs. BioHazard OverKill is lifted by BioHazard. In the final four, OverKill met BioHazard. Much like its previous fight with Voltronic, Christian Carlberg locked down OverKill's blade with the hope that the lower center of gravity combined with sudden forward inertia would make OverKill's wedge lower than BioHazard, allowing OverKill to get underneath. The fight begun with both robots avoiding the hellraisers before OverKill timidly hit the front of BioHazard. OverKill reversed and got away from the front of BioHazard before attempting to line up for another attack. OverKill got its blade stuck on the killsaws momentarily but freed itself before having one wheel land on top of BioHazard. Both robots then kept making contact with each other and OverKill drove itself into the spikestrip before eventually, BioHazard got under OverKill and flipped it into the pulverizer. OverKill suffered one blow directly on its main cylinder but drove deliberately along the side of the spikestrips in order to self-right itself. This worked and the sparring continued for a while. BioHazard then got another flip on OverKill, which resulted in another self-righting maneuver. BioHazard then attempted another lift, but OverKill escaped before it was turned upside down. However, OverKill took a hit from the hellraiser and a shot from the killsaws, scoring points against it. BioHazard was able to drive OverKill to the pulverizer, where it took several hits and saw its blade suffer damage. The fight ended with OverKill being flipped by the piston, and almost taking another flip from BioHazard. Despite being relentless, OverKill lost a 38-7 decision in favor of BioHazard, knocking OverKill out of the competition.
Heavyweight Royal Rumble OverKill again participated in the Heavyweight Royal Rumble at the end of the tournament. First it pounded frenZy and then hit Little Sister. It next went after frenZy again before beginning to strike MechaVore. After scooping up MechaVore and shoving it into the wall, OverKill turned its attention towards HexaDecimator, but was flipped by the Team WhoopAss bot. After clashing with frenZy again, OverKill returned to scoop HexaDecimator and drove it into the spikestrips. After being attacked by GoldDigger, OverKill returned to face frenZy once more, before going after Nightmare. OverKill was one of six robots still moving at the end of the rumble, but lost out to HexaDecimator.
Season 4.0
OverKill vs. Greenspan The match deciding hit between OverKill and Greenspan. Due to being seeded, OverKill was allowed to skip the preliminary rounds of Season 4.0 and advanced straight to the Round of 32, where it fought against Greenspan. This fight was fairly uneventful in the beginning stages, until Greenspan decided to follow OverKill towards the red square. OverKill, however, drove over the killsaws in the process, and was tossed backwards by them. This resulted in OverKill hitting the front of Greenspan, throwing Greenspan up into the air, and sending it upside down on its back, leaving Greenspan immobilized. OverKill won by knockout and advanced in the competition.
OverKill vs. MechaVore OverKill fighting MechaVore. OverKill's next opponent in the Round of 16 was MechaVore. At the start both robots strafed slowly around each other before MechaVore began chasing down OverKill. OverKill drove over the killsaws, turned, and exposed its right wheel to MechaVore, resulting in Mechavore cutting into OverKill's rim and slicing into its blade. MechaVore then crashed into OverKill's blade again, but this sudden impact stalled its gas-powered disk motor, and wasn't able to work for the rest of the fight. This allowed OverKill to get underneath its opponent before MechaVore reversed itself into the pulverizer, where OverKill pinned it. Mechavore escaped but began having control problems as OverKill drove over the top of MechaVore and flipped itself. Both robots then drove around the BattleBox for a while before MechaVore took damage from the killsaws. OverKill then took control of MechaVore and pushed it into the hazards, scoring points. OverKill continued its aggression and eventually bent MechaVore's disk out of shape. Then OverKill pushed MechaVore back to the pulverizer for a final shot. With 20 seconds left, MechaVore began malfunctioning and spun uncontrollably. Both robots took significant damage from each other but OverKill controlled the match and won on a 29-16 judges' decision.
OverKill vs. M.O.E. OverKill pushes M.O.E. towards the killsaws In the quarter-finals for a third time, OverKill took on M.O.E. again. This battle was close, with M.O.E. doing damage to OverKill's wheels and blade, which it mangled, but for the most part OverKill was unharmed. OverKill however, was the aggressor, pushing M.O.E. into the traps constantly, one time almost cutting the motor to M.O.E.'s weapon, and outdriving it. OverKill dodged M.O.E. for much of the first minute, wearing down their battery, and M.O.E.'s saw blade hubs became loose. At one point in the match, M.O.E.'s bar got caught in the rim of OverKill's wheel, and Christian Carlberg gunned it, flipping M.O.E. over. After awhile, the two bots eventually became loose. Near the end of the bout, M.O.E.'s weapon began to slow down. In the end, it was close, but OverKill was given the judges' decision on a 25-20 scoring. The decision was booed by the live audience, but OverKill advanced regardless.
OverKill vs. Surgeon General OverKill's left wheel gets hit by Surgeon General. Surgeon General got its disk right into OverKill's blade. In the semi-finals, OverKill took on the potent horizontal spinner of Surgeon General. Due to damage caused from M.O.E. in its previous fight, the team had to replace OverKill's blade for the one seen against MechaVore. OverKill spent most of the first part of the match dodging the horizontal spinner, but then Surgeon General managed to get some strikes on OverKill's wheels and wedge. Eventually, Surgeon General got its disk caught in OverKill's blade, stopping it. OverKill drove the two of them over the killsaws, knocking Surgeon General loose, but it was immobilized. OverKill won by KO in 1:45 and advanced to the final for the first time in its career. According to Christian Carlberg, of the three horizontal spinners that OverKill faced in Season 4.0, Surgeon General was the one that caused the most damage.
OverKill vs. BioHazard OverKill and BioHazard face off. OverKill gets pushed on the killsaws by BioHazard. In the championship-decider, OverKill took on BioHazard again. Both robots drove out of their squares and BioHazard rammed straight into OverKill, nearly flipping it over. While OverKill swung its blade, BioHazard got underneath OverKill, lifted the arm and headed toward the arena wall, tipping it onto its side. OverKill landed right-side-up and drove back. BioHazard then took a few hits from OverKill's blade. OverKill drove itself over the killsaws and went straight at BioHazard, flipping itself onto its back again. The flipped OverKill ran into the spike strip in order to flip itself back over. After this, OverKill tried to drive away, but its blade was caught on the spikestrip. BioHazard came over and pushed OverKill into the wall, bending its blade. BioHazard then pushed OverKill over to the center of the BattleBox, then flipped OverKill back over again, but its lifting arm was stuck in the up position. OverKill hit BioHazard several times with its blade before driving over the low profile of BioHazard once again. BioHazard rammed into OverKill, flipping it, and began to push OverKill around. For the rest of the match, both robots attempt to gain an upper hand, but are unable to. BioHazard won on a 27-18 judges' decision and OverKill was declared the runner-up.
Season 5.0
OverKill vs. Wrath OverKill pushes Wrath to the pulverizer. Due to previously competing in Season 4.0, OverKill was allowed to skip the preliminary rounds of Season 5.0, where it eventually fought Wrath. The first time that Wrath slammed OverKill into the wall, the adjuster became loose and slipped, causing the drive train to pop out. This rendered Wrath a sitting duck, so OverKill pushed it into a pulverizer, comfortably winning by knockout and advancing to the Round of 16.
OverKill vs. BattleRat OverKill takes BattleRat to the pulverizer. BattleRat is overturned late in the fight. In the Round of 16, OverKill took on BattleRat. Immediately, BattleRat drove up OverKill's wedge and Christian Carlberg swung its blade over, landing several hits before driving over its ramp-shaped opponent. BattleRat raised its lifter to try and control OverKill, then opted to try and lift instead, but neither approach was successful. BattleRat used its lifter to throw itself over 360 degrees before being shoved under the pulverizer. BattleRat tried to remain aggressive, but the blade of its lifter had been buckled. OverKill then returned BattleRat to the pulverizer, this time flipping it over and allowing Christian Carlberg to attack its baseplate. BattleRat survived to the fight's end, but OverKill won on a 35-10 judges' decision and advanced to the quarterfinals yet again.
OverKill vs. Warhead OverKill pushes Warhead to the killsaws. In its fourth quarterfinal match, OverKill faced newcomer Warhead. Early in the fight, Warhead failed to land a hit on Christian Carlberg's bot while OverKill was able to hit Warhead's spinning dome with its blade and push Warhead around using its wedge. This continued for the rest of the match, with OverKill pushing Warhead into the spikestrip and onto the killsaws. Eventually, Warhead's spinning dome stopped working. The fight went to the judges, who ruled 34-11 in favor of OverKill.
OverKill vs. Voltronic This win put OverKill to the semifinals, where it faced Voltronic again. After driving over Voltronic's wedge multiple times, the time ran out and Voltronic won on a close 24-21 judges' decision, eliminating OverKill from Season 5.0.

Competitive Wins/Losses

• Wins: 13
• Losses: 5

Exhibition Wins/Losses

• Wins: 1
• Losses: 3

Total Wins/Losses

• Wins: 14
• Losses: 8

Competition	Wins	Losses
Season 1.0	frenZy	Vlad the Impaler BioHazard (Rumble)
Season 2.0	Iron Eagle Rumble	FrostBite Tazbot (Rumble)
Season 3.0	M.O.E. RoboSapien frenZy Voltronic	BioHazard HexaDecimator (Rumble)
Season 4.0	Greenspan MechaVore M.O.E. Surgeon General	BioHazard
Season 5.0	Wrath BattleRat Warhead	Voltronic

Mark Beiro Introductions

"The heinous hay-maker from North Hollywood. The bane of every bot, weighing in at 208 pounds. Here is the BattleBot ranked OverKill!"

"He's super ultra violent whose hobbies is giving out punishment. Here is OverKill!"

"If your mother thought running with scissors was dangerous, she should try fighting the BattleBot named OverKill!"

"The robot in red square woke up, got out of bed, dragged a steel blade across your head. Introducing OverKill!"

"As you sit on the porch of the asylum, drool trickling down your chin, you will have good stories to tell of the time you were beaten senseless by OverKill!"

"He's battered, but still unbeaten and now he's hoping to ride his blade to his first Giant Nut. Here is OverKill!"

"In the box, your blood will spill. This is the wrath of OverKill!"

Merchandise

Any appearances by OverKill in merchandise are listed below:

• OverKill/Metal Mechanics
• OverKill/McDonald's
• OverKill/Battle Chains
• OverKill/MiniBot
• OverKill/Build 'Em Bash 'Em
• OverKill/BattleBots: Beyond the BattleBox

Trivia

• OverKill made a brief cameo on CSI in the episode Precious Metal. Its given name was "Biker Chick."
• OverKill fought a total of four other heavy weights twice, M.O.E., frenZy, Voltronic and BioHazard.
• OverKill's creator Christian Carlberg designed a working model of OverKill that was available for purchase on his original CoolRobots website.
• OverKill fought against Tazbot in a mini version of the arena for Hasbro's IBM exhibition match.
• OverKill's fight against FrostBite was briefly shown in the 2014 film "Kelly & Cal".
• In 2017 Coolrobots fought a middleweight version of OverKill called Rampage , which was driven by his daughter in RoboGames 2017.
• OverKill was one of at least eight robots to battle at the Hasbro Showroom's miniature arena for the 2001 Toy Fair. The other seven robots known to have participated are Tazbot, Diesector, Vlad the Impaler, Ginsu, Ziggo, Toe Crusher and BioHazard.
• With the exception of Frostbite, OverKill always lost to a lifter-user.
• OverKill is third of having the most fights without being knocked-out: at eighteen (twenty-two if you count rumbles), with Black Dragon being second and Bite Force being first.