So, there isn't really one well defined version of Ace Duck. The toyline had him as a pilot for the Turtles, the cartoon had him as a movie character, Archie Comics had him as an alien, bodybuilder, intergalactic wrestler.

So, I decided to kind of make him a hybrid visually. Using some of the pilot imagery, plus the bodybuilder build, and this is what I came up with. He's oversized, with minimal articulation, but aesthetically I think he fits in with my animated-esque Nick Turtle figures. I could kind of imagine him being voiced by Patrick Warburton, obviously...

Some sculpt, paint and some Mighty Ducks figure, no idea who.