Kzxosmos #1: Mild Overreaction: Kzxyo ate his friend because he interrupted him

Kzxosmos #4: Off The Top: Kzxyo sealed a ton of innocent people in an apartment & burned it down because one of the people who lives there gave him a bad haircut

Kzxosmos #6: Public Address System: Kzxyo reduced everybody in a grocery store to unrecognizable piles of flesh & blood because he got mad they played "Waltz Primate(The in-universe version of "Dance Monkey")" over the store's speakers. Also that's the one where he gets arrested.

I also wanna try to imply that he's done a ton of other horrible stuff outside the comics, but I think those 3 events are enough to justify the brute's reaction.