Can anybody tell me how I can customize Imaginext Bizarro to look less evil? I need to take those marks off his face.

The reason is that my daughter associates Bizarro with her brother, who has autism. We need him to look friendly. I have no experience customizing toys.

one easy thing you could do is swap out the head and hands with a regular superman fig. Boil and pop works great on this figure.

If you don't like that idea then try some nail polish remover on a Q-tip. If you're real careful you should be able to rub off the lines you don't want and leave the ones you want alone.