Here’s my MP take on Amphibian, another member of Marvel’s Earth-712 Squadron Supreme. The superheroes of this team seem to have been created as an in-joke as each member closely resembles DC universe heroes. In this case, Amphibian is a knock-off of Aquaman. I don’t know enough about this character when it comes to his motivation, but he seems like the Glory Hound type, so that’s what I went with.
Superhero RPG Musings 