The college friend who introduces the body-swap device and orchestrates the party game. He manipulates the players, flees with the device, and is subdued by Nikki. The twist reveals he was actually swapped with Beatrice (who is the real Forbes) earlier to enact revenge on Dennis and Nikki.
Nikki cooperates with Forbes when reclaiming her body becomes more important than trusting him.
Nikki allies with Forbes to recover their original bodies and attempts to force him to operate the device.
Their broken college friendship is connected to Forbes's expulsion and later revenge.
Forbes is described as the group's former college friend, and Dennis apologizes for reporting him to the dean.
Reuben shares responsibility with Dennis for Forbes's expulsion and becomes part of the old grievance.
Dennis apologizes to Forbes for telling on him to the dean with Reuben after the college party.
The apparent Forbes is revealed to be part of Beatrice's identity-based revenge scheme.
The final reveal states that Beatrice is the real Forbes and had swapped bodies with him to enact revenge on Dennis and Nikki.
Explore the full interactive character relationship map of It's What's Inside