Captain Rainbow is a Wii video game that was published by Nintendo and developed by Skip (the creators of Chibi-Robo! on the GameCube). The game stars Nick, a character who can transform into superhero Captain Rainbow. After his ratings have gone down for his television show, he heads to an island that grants wishes, though he'll come across more than that - he'll be required to transform into his alter ego and battle enemies and so forth. Notably, many secondary Nintendo characters also appear in the game including but not limited to Birdo from the Mario series, the playable character from the NES video game Golf, and Hikari from the Japanese exclusive video game Shin Onigashima.
Nick - The protagonist of the video game. He is sent to an island that grants wishes after his television show receives bad ratings.
Minmin - Little bunny-like creatures with yellow ears. The original inhabitants of Minmin Island. They seem to have a connection with the Island's ability to grant wishes. They can be seen forming a bridge so that Nick can reach the shrine at the top of the island.
The Silhoutte - After Nick obtains a star, this figure appears to steal the star away from him. Nick can try to knock him out with his Yo-Yo while in his Captain Rainbow form, but can also try to defeat him in a duel when the silhoutte hits him in the back. A group of four silhouttes can be seen dancing around a stolen star.
Birdo - A character from the Mario series, she is one of the many characters in the game that were featured in Nintendo games that has made it to stardom.