Marill

Marill, the Aqua Mouse Pokémon, is a beloved Water/Fairy-type introduced in Generation II. Known for its spherical blue body and a distinctive zigzag tail with a buoyant ball on the end, Marill is often found near rivers, lakes, and other bodies of fresh water. Its fur is naturally water-repellent, allowing it to stay dry even when submerged, a trait often highlighted in its Pokédex entries and appearances. Marill evolves from Azurill when leveled up with high friendship and then into Azumarill starting at level 18. Its playful and gentle nature has made it a popular choice for trainers in the games and a recurring character in the anime, notably as Misty's Marill. Marill's dual typing gives it unique defensive and offensive capabilities, being strong against Fire, Ground, Rock, Fighting, Bug, and Dark types, while vulnerable to Grass and Electric attacks. Its design, inspired by a mouse and a beach ball, contributes to its endearing appeal and widespread recognition across the Pokémon franchise.