Well, theres this guy called Spriter Sonikku on Youtube. He made Accurate versions of CaveStory Sprites onto SMW.
Ma Pignon: http://www.youtube.com/watch?v=w3SFdb_BNQw
Critter: http://www.youtube.com/watch?v=0QW3pP8Srp8&feature=related
Flying Bute: http://www.youtube.com/watch?v=hqmeToorhxk...