Qax (pronounced /kæz/) is the infamous evil counterpart/clone to the famous Xaq. Qax, although currently not shown in any PCGs directly, is the reason for all evil in the entire PCG universe. He is so powerful in fact that none has seen his face, and few have actually talked to him (although legends say he looks like Xaq).
Many creatures, among thousands of planets, are unaware of his existence, but the creatures that do know of him, serve him or worship him like a deity. Even Xaq who had branched off of this character does not currently know of his existence, yet fights his power every day ignorantly. His power is so overwhelming that even real gods have problems facing him.
The only thing that keeps Qax from entirely destroying all of existence is the fact that he wants to capture Xaq alive so he can gain his power. You see, Qax is not evil just to be evil. He is in search of power. Whether this power is good (Like Xaq) or evil. (Chronicles Addendum)