Captain Underpants and the Terrifying Return of Tippy Tinkletrousers (Full Colour Edition) (Book 9)

In the ninth epic novel, George and Harold encounter their biggest challenge yet in the form of Tippy Tinkletrousers, who is back for revenge with his time-traveling antics. The two friends, along with Captain Underpants, must face off against Tippy as they navigate through time, experiencing laugh-out-loud adventures and facing the consequences of altering the past.