Batwoman’s Peter Outerbridge Teases Black Mask’s War on Gotham. Black Mask finally made his way to Gotham City on the latest episode of Batwoman. And from the second Black Mask first showed up onscreen, he made it clear that he’s not messing around. Fans were stunned when it was revealed that Roman Sionis’ obsidian-faced alter-ego is the person responsible for Kate Kate’s sudden disappearance, especially when they learned that he is still holding her captive. But it turns out that Kate is only the beginning of his reign of terror.