In preparation for Season 5, the team has already been working on upgrades for Extinguisher. The only known ones so far are some custom yellow and black wheels to improve traction, a new lighter, brushless fire alarm, a new set of steel wedgelets, a new axe arm, and 35 lbs AR400 spike for it.
Discovery Season 4
Extinguisher's first fight was against a revamped version of The Four Horsemen. Extinguisher started off rather poorly as they missed with their weapon, which was also proving to be quite sluggish due a plate connected to the clutch that powers the weapon shrinking in the cooler temperature at the event. This undid all the fine tuning the team did prior to the fight. Extinguisher then took a hit from War but didn't suffer much damage. Extinguisher continued to move around the arena, occasionally firing its weapon but had very little success hitting The Four Horsemen apart from flipping Butter Cup over. Extinguisher then lost drive on one side as the outer shells for half the motors tied to the drive system shattered after shaking from the impacts and hitting the centers of the motors but Daisy had stopped moving completely. Extinguisher was now driving in circles until it finally stopped moving. However, as the countdown began, Extinguisher got going and managed to survive to a judges decision. The judges awarded a 2-1 split decision to The Four Horsemen.
Extinguisher also participated in a rumble with Russian newcomer Rainbow and veteran Double Jeopardy. As the rumble got under way, Extinguisher missed with its weapon and instead took damage to its side from Rainbow's spinning bar. Extinguisher continued to fight but its weapon still didn't make contact, resulting in its drive taking severe damage. Extinguisher spent the rest of the rumble driving in circles having lost a drive chain earlier on. The judges awarded Rainbow a unanimous 3-0 decision.
Extinguisher's next fight was an untelevised was against twice rejected newcomer, Battlesaw. For this fight, Extinguisher went with a thick front wedge and its axe. This proved to be a good choice as Extinguisher was able to push Battlesaw where it wanted to, briefly causing smoke to appear from Battlesaw when it was near the screws. Extinguisher had little to do and nothing to fear as Battlesaw's weapon had been disabled so it continued to push the slow-moving Battlesaw into the arena barrier and the screws before Battlesaw finally stopped moving near the pulverizer. Extinguisher wanted to use its axe, but the receiver for its weapon wasn't working, but Extinguisher was still able to win by KO.
Extinguisher also took part in an exhibition rumble with The Four Horsemen and P1. The rumble was off to a good start for Extinguisher as they were able to land hits on both The Four Horsemen and P1 with P1 losing its sacrificial spoiler. Unfortunately, Extinguisher was then lifted by P1 before losing a tire and being pushed onto the screws. Extinguisher escaped but was down to one side of drive and began smoking. To make matters worse, P1's minibot, Burnout, got under and ignited a LiPo fire inside Extinguisher with its flamethrower, which grew bigger and bigger as the match went on. Extinguisher's remaining drive stopped working and eventually lost the use of its hammer too. The fire grew to such a size that the match was cut off early, bringing the rumble to a judges decision, which ruled in favor of The Four Horsemen.
- Wins: 1
- Losses: 3
|Discovery Season 4||Battlesaw (Untelevised Undercard Match)||
The Four Horsemen (Undercard Match)
Rainbow (Undercard Rumble)
The Four Horsemen (Exhibition Rumble)
Faruq Tauheed Introductions
"From Tampa, Florida. Whoo child, it's the first responder, coming in hot. When it's sizzling, you're fizzling, no matter which weapon it brought. It's ok, everyone knows that you're about to get hosed. It's EXTINGUISHER!"
"Ladybot ladybot, fly away home. Your bot is on fire and your pit crew is gone. When you wonder, "Am I toast? Am I out?" Listen to me, you are son. Here to make sure you're the last finisher and reduce you to ash, it's EXTINGUISHER!"