Scooby-Doo and Scrappy-Doo (TV Series)
Picnic Poopers/Muscle Trouble/Alien Schmalien (1982)
Full Cast & Crew
Cast
| Daws Butler | ... | (voice) | |
| Dave Coulier | ... | Muscles Malone (voice) | |
| Nicole Jaffe | ... | (voice) | |
| Casey Kasem | ... | Shaggy Rogers (voice) | |
 |
Don Messick | ... | Scooby-Doo (voice) |
| Heather North | ... | (voice) | |
| John Stephenson | ... | (voice) | |
| Frank Welker | ... | (voice) | |
Animation Department
| Danny Antonucci | ... | animator |
| Swinton O. Scott III | ... | inbetween artist (uncredited) |
