In the video game Batman: Arkham City Lockdown which villain returns from the dead? 
Batman: Arkham City Lockdown:  Taking place before "", the game sees players using touchscreen controls to fight enemies one-on-one, including villains such as Two-Face, Solomon Grundy, the Joker and Deathstroke. Solomon Grundy (comics): Solomon Grundy is a fictional character, usually depicted as a supervillain in the DC Comics universe and an antihero in the DC animated universe. Solomon Grundy (comics):  He was originally depicted as a murder victim brought back to life as a corporeal revenant or zombie, though subsequent versions of the character have occasionally depicted a different origin.
i don't know