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 jump high up (so high he or she actually jumps out of Mushroom World). To reach him, the player needs to utilize Princess Peach's floating jump and 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.