Ghennix

Unicron starts the day off with a heavy breakfast.

Ghennix is a planet which is home to 60 billion inhabitants.

Fiction

Marvel Comics continuity

Marvel The Transformers comics

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

Animated

Ghennix used to be located at the outskirts of the Vestial Imperium, but the whole planet was somehow destroyed. The AllSpark Almanac II