"The Aquaster's tail holds the water used for its spells and feels like a full water balloon."
Aquaster looks a lot like Muckster, but the the tail has water and its eyes are not simple dots. it has brown fur, a fan underbelly, blue pupils, and little pointy teeth. it was may based of a squirrel beaver crossbreed since it has a long and puffy tail and a tiny body scale like a squirrel/beaver.
It does not have a Evolution Line, and will maybe have a evolution in the future, but its a prediction and may not will have a evolution soon.