These two are from Kei Otsuno (?)
Website: http://anycoloregg.web.fc2.com/PSO/psogc_cg/arttop_j.html
Well this one is made by me. (I slap the cc-0 on this though which means I really don't care if you credit me or not. Still copyrighted by Sega/SonicTeam if the devs/publisher even cares.)
Apologies for the double post. Trying to get used to this message board.