Phyrus is a criminal Pyronite, a humanoid alien based on plasma and volcanic rocks, who has a penchant for troublemaking and engaging in illicit activities. He crash-landed on Earth by accident after being injured in battle and having his ship shot down.

Art credits: Sena Fletcher.

(Lol, nobody had a pyronite bot here, so I'm making my contribution to the Ben 10 community with my OC).