Guest Stars Morena Baccarin as Dr. Leslie Thompkins Drew Powell as Butch Gilzean / Solomon Grundy Clare Foley as Ivy Pepper David Zayas as Sal Maroni Kyle Massey as Mackey Christopher Heyerdahl as Jack Gruber John Enos III as Jimmy Saviano Kevin McCormick as Aaron Helzinger Isiah Whitlock Jr. as Gerry Lang Allyce Beasley as Dorothy Duncan Anthony Grasso as Ganza Co Starring J.W. Cortes as Detective Alvarez Alex Corrado as Gabe Philip Hernández as Dr. Guerra David L. Townsend as Arkham Guard #1 Sam Seferian as Royston Stephen Axelrod as Fisherman