While Newman is despicable in many ways, Stinkmeaner is actually way more vicious. In the first episode he appears in, he's more like a rambling angry fool who looks for a fight, similar to Newman. In the second and third appearances though, he takes a turn for outright vicious. In "Stinkmeaner Strikes Back" he's a demon who possess Tom to kill and murder the Freemans in revenge. In the third, his family tries to kill them.