Following their own trend of cartoonizing popular television series at the time, Hanna-Barbera produced this series based on TV icon Fonzie [Henry Winkler] and his dog Mr. Cool [voiced by Frank Welker], with pals Richie Cunningham [Ron Howard] and Ralph Malph [Don Most], all voiced by their original real-life counterparts. A time travelling girl, Cupcake [Didi Conn], mistakenly warps to 1957 and the guys help repair her damaged time machine. The series is based on their adventures in time travel, which takes them on ridiculous voyages to the Prehistoric era, Dracula's castle, outer space in the future, ancient Egypt, and medieval times, to name a few. The series was narrated by Wolfman Jack. In addition, original airings were introduced beforehand by cast members of "Happy Days."

Currently being researched.