Been doing a little research. This "group" was intended to be depicted in a TV cartoon series, but that deal fell through. It was a project of the Jerry Kasenetz/Jeff Katz's Super K production company which, among other things, brought us the Kasenetz-Katz Singing Orchestral Circus, Shadows of Knight, Crazy Elephant, The Music Explosion, The Ohio Express, and 1910 Fruitgum Company.
Like practically all persons, places, and things in the known universe, it does indeed have a Facebook page:https://www.facebook.com/pages/Captain-Groovy-and-his-Bubblegum-Army/119300368093235
Yep. Cool tune.