The Monchichis were a line of stuffed animals first introduced in Japan, and an animated series had been produced there in 1980.
In 1983, Mattel, which saw He-Man & the Masters of the Universe adapted by Filmation for weekday 1st run syndication, obtained a license to make Monchichis toys here in the US, and in turn, Hanna-Barbera produced an animated series for ABC, which had the misfortune of going up against studio stablemate and ratings juggernaut Smurfs over on NBC. The toys didn't sell, either, and within a year, the toys and the show were history. To their credit, H-B tried to create a decent continuing good vs. evil story to sell the show, but the kids weren't buying.
Following is the intro:
I never saw the show, so I can't give it a fair rating.