The voice of the character Fitz from Disney+ series Monsters at Work should be familiar to Happy Days fans . The character is voiced by actor Henry Winkler AKA the Fonz from Happy Days. The character couldn’t be further from the Fonz – but in episode 8 of Season 1 there os a fun little easter egg when the character hits the vending machine and says ”I gave it the Fitzerella touch” a throwback to the Fonz when he would fix things by hitting them.