Wartortle is the 1st evolution of my favorite Pokemon Squirtle. Even though he's less cute, he makes up for it in awesomeness. His name comes from the word Warrior and Turtle.
I liked him in the anime as well. Especially the episode where there's a whole team of them as firefighters.
His original Japanese name is カメール (Kameil) which is sort of a pun of two Japanese words meaning a turtle that bites.