Oggy and the Cockroaches (1999)

S2E20 Face Off

After Oggy falls victim to yet another prank by the cockroaches, resulting in his original face being crushed by an anvil, Jack steps in to take him to a plastic surgeon for repairs. However, a mix-up and the pesky roaches' interference result in a disastrous and grotesque transformation for Oggy, leaving him with a truly unappealing new look.