Kingfin

Kingfin is a boss in  Super Mario Galaxy. It is a giant skeleton shark, living in the Bonefin Galaxy. To defeat it, Mario attack it with Koopa Shells.

Kingfin can summon robotic fish from the core of the planet that work the same as Torpedo Teds, chasing Mario down from all directions. The more damage Kingfin takes, the more robotic fish it will summon to attack Mario. After being hit with 5 Shells, it will explode, earning Mario another Power Star.

Trivia

 * Kingfins's name is a pun on the word "kingpin," which means: "The most important person in an undertaking or organization".
 * In an issue of Nintendo Power, and in the Prima Game Guide book, he is mistakingly called "the Bonefin".