Dang, that's cool.The dragon reminds me of two old toys like this I have from childhood that were always companions for my MOTU figures. One is a two headed green dragon and the other is a blue and purple lizard like creature with a saddle. My BA Skeletor is riding him currently.
I think you mean these : https://greenplasticsquirtgun.blogspot.com/2017/11/remco-warrior-beasts-hydraz-and.html and https://greenplasticsquirtgun.blogspot.com/2017/11/remco-warrior-beasts-stegos-and.html .I have the other one you are talking about but not in a single picture but you can see it in this post in the 10th picture https://greenplasticsquirtgun.blogspot.com/2019/02/how-about-little-shelf-porn-aka-shelfie.html
It seem that maybe you might also be talking about this guy: https://greenplasticsquirtgun.blogspot.com/2014/06/frazetta-style-horseman-vs-two-headed.html
That's awesome. Will fit in well with DC Primal Age.
I loved any and all Remco action figures from the 80s!!!
I never knew there were so many of MOTU type figures from back then... Of couse He-Man came out just as I was getting too old to play with toys and hit his stride around the time I decided to go off into the Army and play in the mud...