Underfist - Halloween Bash
- taona: 2008
- Firenena:
- Genre: Action, Comedy, Family, Fantasy, Animation, TV Movie
- Studio: Cartoon Network Studios
- Keyword: halloween, grim reaper, spin off
- tale: Shaun Cashman
- Cast: Grey DeLisle, Greg Eagles, Richard Steven Horvitz, Vanessa Marshall, Diedrich Bader, Armin Shimerman