This was ground zero for the 1970s trend of animated versions of live action shows. That Girl, Star Trek, The Partridge Family, The Odd Couple, My Favorite Martian, The Munsters, Lassie, Gilligan's Island, Bewitched, and Emergency! all had animated spin-offs in the 1970s.
Produced by Filmation, The Brady Kids omitted the parents and Alice characters and featured the adventures and singing of the kids. Barry Williams, Maureen McCormick, Christopher Knight, Eve Plumb, Mike Lookinland and Susan Olsen all initially voiced the characters, although due to a contract dispute, three of them were replaced for the shorter season 2. Animal characters were added in the form of Mop Top the dog, panda cubs Ping and Pong, and Marlon the magical bird. Stories ranged from mundane to fantastical and would include ghosts, aliens, magic and superheroes. Superman is featured in one episode, and Wonder Woman in another. This is notable because this was a year before Super Friends, making this the first appearance of Wonder Woman on television, animated or otherwise.
The Saturday morning show started airing in the fall of 1972, concurrent with season 4 of The Brady Bunch, still airing Fridays at 7pm Central. There were two seasons and 22 episodes produced. The show was released on DVD in 2016.