Viper

Viper was a former member of the Sons of Sal Maro who defected and betrayed the Jedi Order by leading the Assault on the Jedi Temple. After that, he helped the Galactic Alliance track down and kill any Jedi that could be found. Somehow, he fell onto the side of Siron as he made his successful bid to take over the Alliance. Once in control, Siron took the newly manipulated and reprogrammed Targ Seth Gul and planned on making him the replacement for Viper. Viper had bugged Siron's offices and tried to stop the attack by revolting. In a bloody battle inside the ruins of the Jedi Temple, Viper and the men loyal to him were killed by Siron, Eliana, Targ, and several YVH droids.