Prince Bo (にじハムくん, Nijihamu-kun, Spanish "Príncipe Arco") is Prince of Rainbowland. He appears in some of the later episodes of Hamtaro. He also appears in the video games Hamtaro: Rainbow Rescue and Hamtaro: Ham-Ham Games. Prince Bo can make rainbows with his magic umbrella. The Rainbow Girls have a crush on him. Prince Bo can also fly with his wings, which resemble a ladybug's.