Grease pits
Grease pits are a type of arena found on various planets, such as Cybertron and Rigel 6. The grease pits on Rigel 6 host turboworm wrestling matches. While this already sounds like a questionable kind of entertainment, it's still not as bad as what goes down at the grease pits on Cybertron. Located in Polyhex and thus hosted by the Decepticons, the grease pits are among the most brutal and gruesome enterprises in the planet's history. They are not the only type of arena found in Polyhex, and what sets them apart is that in the grease pits, it's Autobot captive against Autobot captive until one of them permanently stops fighting.
Fiction
Marvel Comics continuity
Trypticon's onslaught on the Ark-stationed Autobot troops reminded Sludge of the turboworm matches on Rigel 6. He thought those were less entertaining than the spectacle he was currently watching. King of the Hill!
Toy bios
Kick-Off trained in the grease pits of Polyhex while being held there as a captive. Kick-Off's toy bio
3H comics
Out on a routine patrol mission, Tap-Out and his platoon were taken captive by the Decepticons and sent to the grease pits. During their time there, Tap-Out did all he could to ensure his unit's safety, including taking the place of his comrades in the arena. Tap-Out, his platoon and many other captives were eventually freed by an Autobot strike force. Tap-Out's Universe profile
Dreamwave Generation One comics
Kick-Off was one of the many Autobot prisoners forced to fight in the grease pits. He used his time there to learn as much as possible about the Decepticons and become a better warrior. He was eventually freed, but not before he had been forced to kill his best friend in one of the matches. Kick-Off's More Than Meets The Eye profile
