Talk about informed — could you have a better guide to the history of comics logos than the lettering master himself, Todd Klein? His research into the history of comics is as extensive as it is informed:
Jonah Weiland suggested this character and logo, and though he first appeared in 1994, top image above, I think Hellboy qualifies on all counts thanks to two fairly successful movies. The logo was designed by Kevin Nowlan for creator Mike Mignola. Nowlan is better known for his art, and has only designed a few logos, but this one is definitely distinctive, remains unchanged today, as seen in the second image above, and was even adapted for the films, as seen in the bottom image. For one thing, it’s very readable, with a massive outline that sets it apart from the crowd, and for another, it plays against the expected approach of hellish fire. The small O gives it that slightly off-beat look that echoes Mignola’s approach, too.