His best friend is Buster Bunny who as being a duck, WB-ancestrally the rival of the rabbit, inadvertently irritates him at times, and is also friends with Babs Bunny (by association with Buster) and Hamton J. Pig (an easy target for one of his self-centeredness). His love interest is Shirley the Loon. His greatest rival is probably Buster himself, who dismisses his desperate attempts for stardom, though Montana Max is sometimes his rival in some of the episodes.
He is apparently quite acquainted with Yakko, Wakko, and Dot by Season 3.