| Movie | Role |
|---|---|
| Billy & Mandy's Big Boogey Adventure (2007) | Billy / Billybot / Harold / Pale Ghoulish Juror / Chippy the Squirrel (voice) (as Richard Horvitz) |
| Invader Zim: Enter the Florpus (2019) | Zim (voice) |
| Underfist: Halloween Bash (2008) | Billy / Harold / Pumpkin / Trick-or-Treater Eater (voice) |