
Sorry to be late. This week has been nuts, so all I've got is a sketch.
I never really was into He-Man, I was watching Care Bears, and My Little Pony. It may not have even been on TV by that time. But my husband grew up with it and is a big fan, so he was able to help me think up a few ideas.
He pointed out that Merman is more of his own villain than a Skeletor lackey, and that he has no direct opposite "good guy", and suggested an Aquatic hero. The idea behind him is a mixture of old-school diving gear and Aquaman. The headgear is some sort of saltwater purification device to make it easier to breathe, and he has armor made from shells.