Portrait Chompa

Portrait Chompas are skeletal fish-like creatures found in Mad Monster Mansion. These baddies hide in holes in the walls covered by hanging pictures and behave similarly to the Grille Chompa and Big Clucker, waiting until Banjo and Kazooie get close and then bursting through their paintings, lunging at the bear and bird three times before retreating back (and the painting closing itself up).

The Portrait Chompa's paintings are impossible to distinguish from the mansion's many other hanging pictures at a distance, but these enemies are given away by a characteristic growl just before Banjo comes within biting distance. Unlike Limbos, these skeletons will not regenerate and can be taken down easily with a single hit from the Rat-a-tat Rap.

Trivia

 * Each Portrait Chompa hides behind a different painting: one depicting trees under a full moon, one of a castle, one of Grunty herself, and one of Captain Blackeye.
 * Oddly enough, the Portrait Chompas appear to be undead, yet they lack arms or their arms just aren't shown.
 * They resemble Fishbones from the Mario series.