In "", it is revealed that he has been in disguise as Baphomet, a new vigilante who had been teaming up with Batman. He appears as Baphomet early on, helping the Dark Knight defeat Etrigan the Demon and Poison Ivy. He later assists Batman in defeating villains such as Deadshot, Crazy Quilt, and Calendar Man, even unmasking himself in front of Batman to gain his trust (as Batman had no idea what Onomatopoeia actually looked like, this did not reveal the ruse). At the storyline's end Batman takes Baphomet into the Batcave and introduces him to a disguised Silver St. Cloud before Batman reveals that he is Bruce Wayne and Silver unmasks herself. Bruce invites Baphomet to stay for breakfast as he turns away and puts his utility belt on the table with a "KA-KLAK". He hears Baphomet repeating the sound before turning in horror to see Onomatopoeia midway through slicing Silver's throat and mimicking the noise of the blade.