 Penny is more of his frenemy than just a mere enemy, as well as his constant love-hate-relationship.Wally's obnoxious pals, Eddie Haskell and Clarence "Lumpy" Rutherford pick on the Beaver at every opportunity (though Lumpy seems to be more friendly towards the Beaver in the final season).Wally ably defends his brother against their nasty onslaughts.