B.W.'s big brother

B.W.'s big brother is a big brother mega-transforbalizer. He is D.W.'s version of Arthur for her story in the episode, "I'd Rather Read It Myself." His partner is Bust-trantor.

Abilities
His powers include shapeshifting into any type of form and any additional powers that come from his new forms (ex: flying, super strength). Considering how Bust-trantor was disguised as Pickles the clown in the Crazy Bus form, he may have some limited ability to share his transforming powers.