Pete & Tracy notice something strange is happening to all of the colors of the zoo animals; they try to enlist the help of Rainbow Brite, not knowing that it's all part of Murky Dismal's dastardly plot to lure and capture Rainbow Brite.
| Actor | Role |
|---|---|
| KKevin OsgoodPete | Pete |
| DDanielle DeckerTracy | Tracy |
| SSandra ConallyRainbow Brite (costumed character) | Rainbow Brite (costumed character) |
| AAnna Ponce DeLeoneMurky Dismal (costumed character) | Murky Dismal (costumed character) |
| RRosemarie ThorntonMurky Dismal (costumed character) | Murky Dismal (costumed character) |
| FFrankie GodinezLurky (costumed character) | Lurky (costumed character) |
 Lucille BlissNarrator (voice) | Narrator (voice) |
 Peter CullenMurky Dismal (voice) (uncredited) | Murky Dismal (voice) (uncredited) |
 Pat FraleyLurky (voice) (uncredited) | Lurky (voice) (uncredited) |
 Robbie LeeTwink (voice) (uncredited) | Twink (voice) (uncredited) |
 Bettina BushRainbow Brite (voice) (uncredited) | Rainbow Brite (voice) (uncredited) |