Billy = Adam DeVine (I low key think his persona is influenced by Billy, Adam Demamp seems drawn from him too, and they all share a derpy physicality I would say)
Mandy = Aubrey Plaza? Doesnt “look” like Mandy at first but April from Parks and Rec seems very Mandy
When I first saw Kiernan Shipka as Sabrina I immediately thought she (the actress not the character) had Mandy vibes.
Obviously, Nic Cage as Billy.