Kingfin is a boss that appears in the Mario series. It seems to be some kind of skeletal shark. Although it is one of the largest characters, it is somelacking in defense. In Super Mario Galaxy, the player fights it underwater in the Bonefin Galaxy, and has to throw shells at it to defeat it. There is abeam of light that comes through its eyeholes, sort of like flashlights. If Kingfin sees Mario during battle, it will simply chase him. Sometimes, you can use this as an advantage to hit Kingfin with a Koopa Shell. Isn't it freaky that you can see inside Kingfin's body through its mouth?