Rainbow Brite and the Star Stealer is a 1985 American animated fantasy film directed by Bernard Deyriès and Kimio Yabuki.

The film received mixed to negative reviews, and in later years carried a rare 0% rating on Rotten Tomatoes.

Rainbow is paid a visit by On-X (Pat Fraley), a strange robotic horse with rockets for legs.

Rainbow takes the mission to find Orin and later learns that Spectra is dimming as the result of a massive net being woven around its surface.

Getting in the way of their mission is the sinister Murky Dismal (Peter Cullen) and his bumbling assistant, Lurky (Pat Fraley), who, as usual, are lavishing in the new gloom created by the darkening of Spectra, as well as trying to steal Rainbow's magical color belt.

However, the Dark Princess, now enraged, uses her powerful crystal to create a vortex to send Rainbow, Krys, Starlite and On-X to a prison planet.

Story co-writer Howard Cohen wrote the lyrics from the songs: "Brand New Day" and "Rainbow Brite and Me".

During Rainbow Brite and the Star Stealer's initial release, screenings were exclusive to matinee engagements—"three shows a day", according to Warner Bros.' president of distribution Barry Reardon.

[7] Opening at seventh place with US$1.8 million, and running for just five weeks at a 1,090-venue maximum,[8] the film grossed US$4,889,971 at the North American box-office,[4] months before a 13-episode syndicated series appeared on DIC's Kideo TV block.

Warner reissued the VHS cassette in 2002 and once more in November 2004, and also that same month released the movie on DVD in Region 1 territories with a remastered "open matte" 1.33:1 transfer.

Bonus features on the DVD included a sing-along version of the opening song, "Brand New Day", and a "Find the Missing Color Belt" game, as extras.

[5] The Family Guide to Movies on Video called it "not strong on imagination or substance[,] but lots of color and action designed to sell dolls to the toddler set".