Grim

Grim follows Jessica Harrow, a newly recruited Reaper tasked with ferrying souls to the afterlife. Unlike her fellow Reapers, Jessica has no memory of her death or life before. Her search for answers pulls her deeper into the unseen architecture of the afterlife, revealing hidden forces, cosmic secrets, and her shocking personal connection to Death itself.

Billy's mother, Gladys, first notices Grim in Billy's bed, then in the shower and subsequently starts to get panic surges thinking that Billy is in danger. Meanwhile, Harold, Billy's dad, just thinks that Gladys is imagining things. In the end, Gladys ends up going living with Billy's aunt, Sis to try and calm herself down.

Billy and Mandy tell Grim it is "Opposite Day" and that, when they say something, they really mean the opposite. Due to his difficulty understanding the concept of Opposite Day, Grim has to do Mandy's chores. Finally, Grim thinks he understands when Billy and Mandy say they "want" pie, meaning they "do not want" pie. However, Mandy then says that when she said it was Opposite Day, it really was not.

Billy becomes a superhero, while Grim deals with Billy's inept dad; Billy and Grim try to teach Mandy how to be kind and loving, but their plan backfires.