History
When The Joker tortured him, he forced him to breathe the gaseous remains of the substance Joker Putty that later caused him to turn into Clayface. As Clayface, he wanted to enact revenge on those who had wronged him, starting with Chief Rojas. Despite the combined efforts of Yin and Batman, Ethan showed no remorse or desire to return to his human form and opted to kill his former boss. Through Yin's final pleas, Clayface abandoned his quest for vengeance, then slipped into the sewers. It was this event that caused Ellen Yin to see Batman as a hero, not just some costumed vigilante. Sometime later, Clayface decided to kill the Joker in a bid of rage, an accomplishment to which he almost succeeded when he disguised himself as an Arkham Asylum caretaker. read more
