Fish Bone

The Fishbone is an undead variation of a Cheep-Cheep, similar to the relationship between a Koopa Troopa and Dry Bones. Fishbones reveal that living Cheep-Cheeps actually have large teeth and a singular rib cage. A unique characteristic of Fishbones are their hollow, glowing yellow eye sockets that shine in the dark. They seem to be ruled by a skeletal shark known as Kingfin.

Unlike Cheep-Cheeps, Fishbones will purpously go after the player and attack them. Once the player is within thier view, their eyes turn red as a sign that they have locked onto you. In Super Mario Galaxy, they will explode upon impact. In it's other appearances the Fishbone will simply continue going the path they started even after the player has gone out of the way until the get destroyed by crashing into another object, such as a wall. Otherwise the only other way for a Fishbone to be destroyed is to be attacked with a spin attack from Cape Mario/Cape Luigi or Raccoon Mario/Raccoon Luigi.