 | Mel Blanc als Raven / Dr. Jekyll / Giant Bookworm (voice) (uncredited) |
 | Frank Elmquist als Various (voice) (uncredited) |
| Hugh Harman | Director |
| Friz Freleng | Director |
| Jack Cosgriff | Story |
| Charles McGirl | Story |
| Hugh Harman | Producer |
| Scott Bradley | Music Director |
