Cooper

A dead kid whose soul has been damned to hell. Like the other damned, remembers nothing about his life. He has a feeling that he should know who Abbie is, though.

Brash but negative. Tries to take charge and keep himself and Abbie on the move so they don't double-die. Eventually he remembers, in a remnant nightmare, that Abbie's death is his fault, and starts being consumed by horrible, aching guilt.