So let me get this right. In the process of reverse image you found his real name and then proceeded to search from there.
Depends on what the crime is though. The cops will usually arrest someone in a domestic dispute even though both parties are guilty. Then they'll be charged with assault. It could be as simple as slap across the face.
Case in point. I got arrested for assault. Me and a friend got in a fight while painting my room. I just took the paintbrush and painted the side of his face. Not much just a dab. Well, then he got mad and started throwing things at me. Cops came and we both were arrested for assault. I don't think that makes us dangerous though.