Wailmer did not originate from fanon, and more information can be found on their respective wiki(s). You may read more about it on the following wiki(s):


Wailmer's original art by Ken Sugimori.

Wailmer are Water-type Pokémon. It evolves into the powerhouse Wailord starting at level 40. Wailmer resembles a large spherical whale with no tail. It has a dark blue top, where it's face is and a tan below. They are playful Pokémon and can turn into bouncy balls. They debuted in Generation III. Along with Azurill and Kecleon, was one of the first Generation III Pokémon revealed, in early March 2001. There is a Wailmer in the Litle P and Sandslash Series called Wally, who Cap'n Wally is based off.