After Lidsville, their first series for ABC, was cancelled after 2 seasons, Sid & Marty Krofft returned to NBC in 1973 with Sigmund & the Sea Monsters, which may be partially inspired by Casper the Friendly Ghost. The common thread is that Sigmund (Billy Barty, ex-The Bugaloos), like Casper, wants to make friends, which makes him the black sheep of his family of sea monsters. Sigmund meets a pair of human boys, Johnny (Johnnie Whitaker, ex-Family Affair) & Scott (Scott Kolden), and befriends them, which leads to the predictable perils in every episode.
Funny thing about this episode. It's got a Halloween theme, but didn't air until December. Go figure!
The series was renewed for a 2nd season, with comic Rip Taylor added to the cast as a genie to add more chaos.
Danny Janssen, who composed music for Josie & the Pussycats, did the same here, and produced Whitaker's debut album, released during the first season.