...Shantae, from the 2002 Game Boy Color game of the same name! It looks cool, shows some design prowess, and references one of the only portable games to fetch a going price in the triple digits. Congrats to hiryu64 for the great job, and he should be expecting a copy of the 3D Dot Heroes Original Soundtrack in the mail soon. You, reader, can also download his entry here.
There should be an actual update coming real soon, where you can see the rest for yourself too!