Alpha 9

Alpha 9, or Alpha IX, is a planet.

Fiction

The Transformers cartoon

A battle took place on it at some point in time, in which Kup participated. Petro-rabbits were also involved, so it seems those are a native lifeform of Alpha 9. The Transformers: The Movie

Animated cartoon

Alpha IX was a robotic planet in the Autobot Commonwealth. It was liberated during the Great War in the Autobots' planet-hopping campaign in an event known as the Petro War. The AllSpark Almanac II

Knights of Unicron

The Petro-Rabbit Cantina, located on Alpha IX, was the twelfth venue for the Knights of Unicron on their 2014 "Till All Are One" tour. Knights of Unicron