Marill

Marill, known as the Aqua Mouse Pokémon, is a charming Water/Fairy-type introduced in Generation II. This adorable creature is part of a two-stage evolution line, evolving from Azurill when leveled up with high friendship and then into Azumarill starting at level 18. Marill's natural habitat includes rivers, lakes, and other freshwater environments, where it can be seen floating on the surface using its buoyant tail. Its diet primarily consists of aquatic plants and small insects. Marill is characterized by its cheerful and playful behavior, often seen splashing in water or playing with its friends. In the games, Marill is a popular early-game Water-type that can be obtained relatively easily, while in the anime, it has made numerous appearances, often alongside trainers like Misty and Tracey, showcasing its gentle and friendly nature. Its round, blue body and distinctive zigzag tail, which is filled with oil lighter than water, contribute to its unique and recognizable design, making it a beloved Pokémon across generations.