He is voiced by Tom Kenny (role of Ice King from Adventure Times).
Tux is a cartoon penguin that wears red glasses. He has a slight lisp and carries around a microphone.
His cheesy catchprase is "Zing", which he says after every joke and several sentences. No one laughs at his jokes, and they are usually followed by silence, staring and booing. However, Tux continues to think that he is a riot. While doing the "I Love Tomorrow" musical number, he was dancing with his microphone. When they were in the Decappy-Rail, Tux made frequent puns about the weaponry in the train. (e.g. "Hey Jimmy! Look what I saw!" as a chainsaw came near him)