Cyrrus

Cyrrus is a newborn cloud in Super Paper Mario in The Overthere. If one of the four heroes brings him a Red Apple, he will grow large enough so that any character that jumps on him will bounce all the way into orbit before falling back down to a cloud above him. To reach Cyrrus, the player needs to utilize Princess Peach's floating jump or Luigi's high jump.

Trivia

 * Cyrrus' name comes from a type of long, thin cloud known as the "cirrus." Despite this, Cyrrus actually appears to be closer to another type, "stratocumulus." It may also be derived from the actual name Cyrus.