Glower the Tadpole.

Glower the Tadpole is a fictional character in Nintendo's Donkey Kong franchise. He is an unplayable Animal Buddy who appears in Donkey Kong 64 in the Gloomy Galleon level. He's basically just like Glimmer and was brought in to possibly bring more variety to animal buddies or to give an origin to Winky and other frogs. Both are most likely right seeing Rare's ways. He appears in the two sunken ships at the level. Meaning that there might be two or that the two ships are connected somehow. His name is made up of fanon, as he was never given a real name or even mentioned. Whether or not he has grew into a Winky-type frog or even just a gray or green recolor is unknown.

The appearance of Glower may also point to the fate of his predecessor, Glimmer, who is seen in what are likely his final moments at the hands (or teeth) of a Lockjaw on the box art of Donkey Kong Land 2 - a game which Glimmer didn't appear in. Glimmer hasn't appeared since his possible "death" between Donkey Kong Country 2: Diddy's Kong Quest and Donkey Kong Land 2, although an anglerfish similar in appearance to Glimmer was seen in the trailer for Donkey Kong Racing, which was never released and therefore considered non-canonical.