Oh, Aseprite ! I had never heard of this program ! I would like to learn more about pixel arting, so this is a great tip, 
The drawing is really cute :D I like the pose of the dog in particular as it communicates joy and energy :D I have never played Super Smash Bros myself, but I think this art would fit very well in that game's vibes :D
Always nice to see the progress shots, too <3
RE: Duck Hunt