"Odian the Whatever He Is" is the leader of the Backup League of Super Evil. He and Voltar are great friends. Not much is known about this guy, but at least he has Venus the Echidna (only female on the team, inventor, and brains), Dinatimus the Osprey (athletic and brawns), and Welgonia (best friend of Doomageddon).
There are many theories about Odian's origins. Some believe he came from the Underworld created to try to take over the world. Others believe a dragon, cat, hedgehog, tiger, and lion came together to make Odian. We may never know where Odian came from now, but someday we will.