"technically" any superhero that had his/her own book (comic) could not be in the Justice League of America, they could only be honorary members - Batman and Superman were the first honorary members. this was so the public could get to know the lesser known heroes and so they could rotate new members in (when a member got their own comic they had to go) ... maybe this is part of why Clark has been hesitating?
*remember this all started with the Justice SOCIETY ... the Justice League came later
Superman, Batman, Wonder Woman, Flash, Green Lantern, Aquaman and the Martian Manhunter.
more recognizable characters:
Green Arrow, Atom, Hawkman, Black Canary, Captain Marvel, Plastic Man and dozens of others.
i have never heard of martian hunter... but this is all a bit before my time, i never read the comics but i did watch Superfriends on tv when i was a kid
notes of interest:
> so Green Arrow did not start the JLA...
> where is Wonder Woman? although for a long time in the comics apparently she was only a secretary (???) it would be cool to have an invisible jet flying around Smallville :-)
> Green Arrow had a sidekick SPEEDY(an orphan he adopted) who struggled with a heroin addiction (1970s) and Black Canary was Green Arrow's girlfriend... could be interesting stories for Smallville...
the Black Canary has the howling scream to incapacitate her enemies right? is she the girl that was working with Aquaman and Green arrow to find Clark in the Season Opener?
anyways just thought i would share the info this thread inspired me to read up on