The royal horses are minor characters in The Backyardigans.
The royal horses are used by Knight Uniqua and Sir Tyrone to navigate through the medieval landscape around King Pablo's castle. They appear in Tale of the Mighty Knights: Part 1" and in the flashback portion of the second part.
Uniqua's horse is mostly orange-brown with a dusty white mane and hooves of the same color. Tyrone's horse is mostly dark brown color with a black mane and hooves.