Marc Guggenheim is a patient at Arkham Asylum.
Biography[edit | hide | hide all]
Arkham Asylum Breakout[edit | hide]
At some point, Marc Guggenheim was incarcerated in cell number 345 at Arkham Asylum. During the breakout, he escaped from his cell, but was quickly returned by The Flash.[2]
Appearances[edit | hide]
Appearances | ||
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Elseworlds, Part 2 | Unseen |