So, I'm planning to make young Atlas from Tetsuwan Atom for Super Famicom.
I know somebody did a version of Atom from that game which is not that good.
Here is the sheet:
http://www.spriters-resource.com/snes/tetsuwanatom/sheet/51110
I may do some sprite edits to make him more suitable for mugen and there are at least two episodes with useful voices for young Atlas in the 1980 version of Tetsuwan Atom.