Hush

Dr. Thomas Elliot, also known as Hush, is a minor antagonist in Batman: Arkham City as well as the primary antagonist for the side mission which involves finding a serial killer by investigating corpses with missing faces. He returns in Batman: Arkham Knight as part of the Most Wanted mission A Friend in Need, where he uses his new face to infiltrate Wayne Tower and kidnaps Lucius Fox.

He is voiced by Kevin Conroy, who voices Batman and Bruce Wayne in the Arkham Games as well.