Monchhichis was an American cartoon series produced by Hanna-Barbera based on the Monchhichi popular toy line by Sekiguchi. It ran for one short season in the United States on ABC starting September 10, 1983. This seems like a prime show for an on-demand release from someone like the Warner Archive, but not we need to be content with what we can find online and the one episodes that was included in Saturday Morning Cartoons: 1980s, Vol. 1.
Here is one of those rare online episodes in 3 parts. It is called “Swamp Secret”.
The Monchichis in “Swamp Secret” (Part 1 of 3)
The Monchichis in “Swamp Secret” (Part 2 of 3)
The Monchichis in “Swamp Secret” (Part 3 of 3)