Wooper

Wooper is a /-type Pokémon introduced in Generation II.

Gender differences
Male Wooper have four branches on each antenna (which function as gills), while females have only two.

Evolution
Wooper evolves into Quagsire at level 20.

TM/HM
Generation VII=

Generation VI=

Generation V=

Generation IV=

Generation III=

Generation II=

Anime

 * Olesia's Wooper
 * Wooper (anime)

Trivia

 * Wooper & Gastly could learn Ice Punch in Generation II, despite not having arms.
 * In the anime, a Wooper had a heart on its chest.
 * Wooper's cry in the anime sounds like Upah! much like his Japanese name, ウパー (Upah).
 * Wooper's cry in the game is similar to Sunkern's.

Origin
Wooper and its evolution are based on the axolotl (this is further seen in its Shiny coloration where it grows pink), a salamander, and possibly a mud-fish.

Etymology
Wooper and Upah come from the term "wooper looper", a marketing term used in Japan that is used to sell amphibians, mostly axolotls and salamanders, which is what Wooper is based on.