Moonglow

Moonglow Nite Sprite Moonglow and Nite Sprite make the night sky beautiful. Sunriser is a beautiful pink horse that lives in Rainbowland.
Sunriser

The cartoon series never shows Sunriser as belonging to anyone. Because of the Dress-Up Sunriser's box, which shows Dress-Up Tickled Pink riding her, most people assume she belongs to Tickled Pink. However, I think that was a mistake (or else due to the fact that a Moonglow doll was only produced in Germany), and Sunriser was originally intended to belong to Moonglow. Here are 3 good reasons why:

  1. None of the Color Kids have horses; only Rainbow Brite and Stormy do. Tickled Pink is technically a Color Kid.
  2. Look at the names: Moonglow, Nite Sprite, Sunriser... they fit. All deal with nighttime.
  3. Although Sunriser is pink like Tickled Pink, Moonglow has a considerable amount of pink in her clothing.

So, everyone is entitled to her own opinion, but I believe Sunriser is intended to belong to Moonglow.