Maxilon

Maxilon is presumably the name of Gallaxhar's home planet.

Physical aspects
It was mainly pink when viewed from space and orbited near a large blue gas giant with multiple rings. None of Maxilon's surface or other geographical features are known.

It also contained a mineral known as Quantonium, some of which crashed on Earth in a meteorite.

Culture
It is the homeworld of Gallaxhar's species, the Maxilonians, squid-like creatures with large bulbous craniums and two antennae.

Maxilon was known to have a high senate that found Gallaxhar guilty of high treason. However, it is unknown if this was the planet's main ruling body.

History
Unfortunately, Maxilon was destroyed by Gallaxhar in response to a series of emotional traumas he suffered during his youth. It is unknown how Gallaxhar destroyed it.