onepunch_man / onepunch-man / one_punch_man

How should this title be handled and/or aliased? onepunch_man is what we currently use, the remade manga apparently uses "OnePunch-Man", the the anime uses "One Punch Man".
EDIT: Or, for the anime on Hulu, "One-Punch Man".

I'd go with the manga's version with the hyphen after Punch and before Man, and leave a space between One and Punch, since that is what I'm seeing a little bit on the remade manga website's banners, it would be in line with current policy. EDIT: Log's example makes sense, we should go with his plan.

one-punch man would be the correct form in english and since the artist can't actually decide that's probably what we should use.

"One-Punch Man" is a man who does whatever with one punch
"One Punch-Man" is a man who punches alone

Viz and Hulu use One-Punch Man. Anime ads use One Punch Man. We should use one of those.

+1 to One-Punch Man.