The Silent Guardians!
other Serpent Society leader
Sidewinder is a crafty devil, and shares leadership responsibilities of the Serpent Society with Black Mamba (and he believes that he should lead alone, naturally). He is a capable leader, but has suffered defeat at the hands of The Silent Guardians, a fact that gnaws at him.
His powers derive solely from his teleportation cloak and… Well, I wouldn’t want to give away the surprise!