Thunder Dog: Kitty helps Dudley conquer his fear of thunder in order to stop Bird Brain from using his thunder cannon to bury Petropolis in an avalanche. Snap Dad: To Dudley's horror, Snaptrap and his mom, Peg, have fallen in love! Things couldn't get any worse, or so Dudley thinks, until Snaptrap is inspired by his new girlfriend to turn a new leaf and becomes the newest member of T.U.F.F.—NAS