Rebecca Nightrod, voiced by Laura Silverman, is Nathan’s demanding, shrewish girlfriend, a professional tennis player turned sitcom actress and model. She is controlling and never allows Nathan to speak, and he admits that he is afraid of her and his hatred for her is “the most brutal thing ever.” When he finally prepares to break up with her, she falls down several flights of stairs, ending up disfigured and in a coma, which prompts Nathan to change his mind about ending their relationship (she is now the “ultimate” girlfriend, as she can no longer terrorize him).

In "Klokblocked", Nathan learns that Rebecca, has already found a new boyfriend while still in a coma.