Hellboi Xeno was summoned to the Xenopunk's home planet during Planet War 2, supposedly from the fiery depths of hell. The purpose of his summoning was to gain control of the battle and ultimately attempt win the war. It is unknown which army attempted the summoning.
Hellboi Xeno cannot be burned, no matter how high the temperature. He can even manipulate hellfire on a small-scale to incinerate his enemies, he boasts super-xeno strength, and accelerated healing abilities. To avoid being used as a weapon for war, Hellboi went into hiding after incinerating both sides of the planet war. He hasn't been seen since that day. Many Xenos speculate on his existence entirely...
Canon - Yes
Rank-...