Fangface

Fangface is a 30-minute Saturday morning cartoon produced by Ruby-Spears Productions for ABC which aired from September 9, 1978, to September 8, 1979. The executive producers were Joe Ruby and Ken Spears. Slightly based on Scooby-Doo, Fangface follows a group of teenagers who solve mysteries, one of the teenagers transforms into a wild werewolf named 'Fangface' whenever he sees the moon, but changes back when

The Invisible Menace Mix-Up
The Sky Ghost captures air show pilot (and friend of the gang), Su Cheng and uses a green-glowing orb to hypnotize her into revealing where her uncle is hiding the world's largest black pearl he needs for his invisibility machine.