Starlite, a flying horse, is Rainbow Brite's main method of transportation in our universe. He able to gallop on her magical Rainbow, and he can sometimes fly without it! He loves Rainbow Brite very much and always watches out for her safety and well-being. He gives her help and advice and takes her anyplace she wants to go, whether it's fun or for the cause of color. Starlite's only fault is that he's vain about his striking appearance, and that vanity makes him vulnerable to the treachery of the two villains, Murky and Lurky. When that happens, he has to count on Rainbow Brite and The Color Kids to save the day... and him!

From Golden's "Who's Who" Coloring Book