Ghennix

Ghennix is a planet in the Generation 1 Continuity Family. It's in Unicrons tummy now.

Marvel Comics
Shortly after being awakened by Primus's Scream, Unicron devoured the planet Ghennix. Three low-life crooks attempted to escape the planets destruction, only to be caught and reformatted by Unicron. Now dubbed Hook, Line, and Sinker, the Chaos-Bringer sends them into an alternate future to abduct Galvatron