Denver, the Last Dinosaur (1988)

S2E1 History Repeats Itself

When Wally finds himself at the mercy of Johnny Price, a relentless prankster, Denver steps in to lend a hand. Utilizing his enchanted tar eggshell, Denver takes Wally on a journey back to a moment in his own past when he faced bullying from a Pteranodon. This experience helps Wally gain insight and eventually build a friendship with Johnny Price, transforming their dynamic for the better.