The Grim Reaper or Grim is from The Grim Adventures of Billy & Mandy but still made some cameos in this show. He is the grim reaper and Billy and Mandy have him as their friend/slave. He talks in a Jamaican accent, and was voiced by Greg Eagles.
He is a skeleton in a black robe. He has a long wide chin.
He hates being stuck with Billy and Mandy, and longs to be free, but he has shown that the kids have grown on him some.
- Everybody Loves Uncle Bob (As a toy)
- Ultimate Evil (As a hologram)
- Gridlocked and Loaded (As a bobblehead)
- Company Halt