Twink is an adorable bundle of sweetness and silliness. He is Rainbow Brite's favorite Sprite and her high-energy sidekick. He is so full of energy that he literally bounces in the air, sometimes hitting his head on tree branches or low-flying birds. Twink is one of the only white Sprites- a fate which befell him when Murky Dismal threw him into The Pits where he lost his color. Rainbow Brite rescued him before he turned clear, and nursed him back to health. There is a friendly rivalry between Twink and Starlite because each likes to think of himself as Rainbow's protector, but she has a way of joking them out of their jealousies. Twink is very fussy about color and likes to give orders to the other Sprites, but fortunately, they don't take him too seriously. Twink can speak English, which makes him quite useful when there are lots of Sprites present; he can translate!

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