For me (at least as a child) it was always and forever Lee Falk's classic hero The Phantom. Also known as The Ghost Who Walks and hence, 'Mr Walker' when he puts on 'normal' garb.
I was such a fan I tracked down a lending library near my grandparents' place where I spent my precious pocket money not just on Phantom comics, but also on the occasional Phantom novel (yes, they were so popular that Lee Falk had 'novelised' them).
Second on the list, of course, was Lee Falk's other great creation, Mandrake the Magician.
For some reason I don't quite enjoy 'comment' comics as much (Doonesbury et al). Perhaps I just remained the sort of boy who's holding out for a hero who's gotta be fast and he's gotta be strong and he's gotta be fresh from the fight sort of thing. (Hmmmm... that sounded a touch homoerotic there for a second, until I realised that I wanted to be that hero, not to know him.)
cheer
the sunshine warrior
