Melmacians
Most Melmacians appear in the animated series. But Rhonda, Skip, Rick, and Stella have appeared in the live-action series.
- Bob Shumway (voiced by Thick Wilson) - Gordon's father
- Flo Shumway (voiced by Peggy Mahon) - Gordon's mother.
- Curtis Shumway (voiced by Michael Fantini) - Gordon's little brother.
- Augie Shumway (voiced by Paulina Gillis) - Gordon's little sister.
- Harry - Shumway family's pet bird.
- Neep - Shumway family's pet vespa (a species like a dog).
- Rhonda (performed by Lisa Buckley in the live-action series, voiced by Paulina Gillis in the animated series) - Gordon's girlfriend. She appeared in the episode of the live-action series titled "Help Me, Rhonda." Before the destruction of Melmac, Skip saves Rhonda by taking her away in his spaceship.
- Skipper "Skip" III (performed by Bob Fappiano in the live-action series, voiced by Rob Cowan in the animated series) - One of Gordon's friends. He appeared in the episode of the live-action series titled "Help Me, Rhonda." Before the destruction of Melmac, Skip saves Rhonda by taking her away in his spaceship.
- Rick Fusterman (voiced by Paul Fusco) - One of Gordon's friends. He appeared in the episode of the live-action series titled "Help Me, Rhonda." Following the destruction of Melmac, Rick got married to Stella and they opened up a tanning parlor on Mercury.
- Larson Petty (voiced by Thick Wilson) - The primary villain of the animated series. He has tried to invade Melmac many times only to be thwarted by ALF.
- Stella (voiced by Ellen-Ray Hennessy) - A coffee shop waitress. Following the destruction of Melmac, Stella got married to Rick Fusterman and they opened a tanning parlor on Mercury.
Read more about this topic: List Of ALF Characters