Uncle Pecos is Jerry's cow-boyish uncle who appeared in the Tom and Jerry short "Pecos Pest", who wanted to stay with Jerry to visit. He is known to be always singing with a guitar, with a black cowboy hat that covers his eyes. He gets angry at Tom every time one of his guitar strings snap, because he plucks one whisker off of his face to replace it, and, at one point, took one of Tom's claws to use as a guitar pick.