Slaughter City

Slaughter City is a Cybertronian city-state that lies across the Badlands from Kaon. It's a dangerous place.

Transformers: Exodus
Prior to the war Slaughter City was second only to the similar city of Kaon as a low-class industrial work center and site of illegal gladiatorial games between disaffected workers. It was one of the early strongholds of Megatron's supporters before the war, along with Kaon and Blaster City.