He is voiced by Stephen Root.
Role in the film
In the film, Zeb is the only one who wanted to get the band back together (besides Fred); the only problem is he owes the bar lady (whom he constantly calls "Cha-Cha") money and the only way to owe her nothing is to beat her bar house band in a musical duel. At first, he was rusty, but he soon wins the battle. It is also implied that Zeb was the source of the attention between the band because of his drinking and picking on Tennessee.