Monacus

What happens in Monacus stays in Monacus.

Monacus is a bleak, barren asteroid known as a haven for gamblers and characters of all types.

Fiction

Animated continuity

Generation 1 cartoon

Monacus is the destination for Bosch and Smokescreen after the former takes Optimus Prime, Inferno, Bumblebee and Perceptor as prisoners.

If you have a need to sell robot slaves, watch gladiatorial games, or loose the payroll on slots, then head on down. The dank district of Sheol is located on Monacus, home to Lord Gyconi's Pit of Destruction arena. The Gambler

It's known to be visited by bounty hunters as well.

Footnotes

From Teletraan I: The Transformers Wiki, a Wikia wiki.