The Rainbow Castle guards are the Rainbow King's personal bodyguards and the security of the Rainbow Castle. They are responsible for the safety of the Rainbow King and serve as his travel helpers.
The guards are quick, alert, and accurate when it comes to serving the Rainbow King. They are known to slide on their bellies to get to him faster in certain situations.
The guards are tall and are approximately 10 times the Rainbow King's size. They are white in color and wear blue or pink helmets, gloves, and socks. Some can vary in size and wear yellow gear.
- They are among the largest-sized residents of the Rainbow Kingdom, along with the Yetis.