- The Riddler/Edward Nygma
crime: Murder of William Jesse. Outside of Nautilus, unconfirmed.
status: Sliced apart in Helix while conscious. Body parts disposed in the sea of Nautilus.
- Ladd Russo
crime: Murder of several people in Nautlus and undoubtedly countless others in his world.
status: Put on observation until people are done feeling vengeful towards Ladd. Dexter's waiting on his turn.
- Adrian Veidt
crime: Murder of thousands in his world's New York. No crimes performed in Nautilus.
status: Put on observation in order to see if any additional actions occur in Nautilus that are similar to his world's.
- Cain
crime: Impersonation of Rion and murdered potential girlfriend Pepper Potts.
status: Put on observation and planning; Dexter must figure out a way to block his own thoughts to prevent Cain from reading them.