can they be used commercially?
Viewing post in GB Studio - Sprites comments
I'm not sure. I did base them heavily on actual games. Basically I looked at the games and recreated them, there are some minor tweaks and I did add things that do not exist in the actual games (Like different type eyes). So, with that in mind, I do no care how anyone use them. Sorry I don't really have an answer for your question. :/