Fangface was a 1978 Saturday morning cartoon produced by Ruby-Spears Productions for ABC.

    Highly derivative of Scooby-Doo, which was also created by Joe Ruby and Ken Spears, Fangface features four teenagers — Kim, Biff, Puggsy, and Sherman "Fangs" Fangsworth who transforms into a werewolf named Fangface when he sees the moon or an image of the moon — who solve spooky mysteries involving ghosts and ghouls. Fangface usually immediately attacks Puggsy upon transforming, before taking a moment to recognize his friend. (He's not very bright in either form.) Whenever Fangface hears a food-related word, or a word or phrase that sounds like one (e.g., "let us," which sounds like "lettuce"), he tries to eat Puggsy; when this happens, Biff and/or Kim rubs Fangface's foot to calm him out of his "feeding frenzy." The sight of the sun (or a picture of the sun) transforms Fangface back into Fangs.

    Despite the temporary difficulty of Fangface attacking Puggsy, the gang never hestiate to initiate the transformation to take advantage of the werewolf's power to cope with any danger. Indeed, they often refer to Fangface as their "secret weapon."

    Fangface and Fangs are unaware of each other, but Fangface lives in the moment, so he never seems to question why he's suddenly in a new place, whereas Fangs is always bewildered upon reversion.

    Fangface ran for one season in 1978. In 1979, it was made into a segment of The Plastic Man Comedy/Adventure Show entitled "Fangface and Fangpuss," and included a new character: Fangs' infant cousin Baby Fangs, who turns into a baby werewolf called Fangpuss. This segment became a separate series in 1981 and, like the original Fangface, ran for just one season. After that, Fangface and company faded into oblivion.

    In 1983, a VHS videocassette containing three episodes was released in the United States; this videocassette is currently out of print, and Fangface has not been released on DVD.

    Puggsy and Fangs were modeled after Leo Gorcey and Huntz Hall, respectively, of the Dead End Kids.