"In any time, there will always be a need for heroes." - the Time Trapper, Legion of Superheroes #61(1994)
"What can I say? I guess I outgrew maturity.." - Bob Chipman
Hawkman (Carter Hall)
Dr. Fate (Hector Hall)
Hawkgirl (Kendra Saunders)
Dr. Midnite (Piotr Cross)
Sand (Omg I'm drawing a blank and don't feel like looking it up)
It's so hard not to include Power Girl, but my favorite interpretation of her remains the JLI/E one.
Carter & Shiera Hall
Jay Garrick
Sandman
The Spectre
Flash
Kudos to Maureen O'Connell of Scholastic for getting us the Harry Potter series.
Dr. Fate (Kent Nelson)
Stargirl
Jesse Chambers
Wildcat (Ted or Yolanda)
Spectre
Jay Garrick
Alan Scott
the Dr Mid-Nites
Hawkgirl -- Kendra Saunders
Atom Smasher
Alan Scott
Jay Garrick
...obviously, but not counting them in a five:
Sand
Starman - Jack Knight
Hawkman - Carter
Hawkgirl - Kendra/Shiera (Saunders/Hawkins/Hall - all the same to me, Shayera is the different one)
Superman - Val Zod (even though he's not yet)
Cyclone
Spectre
Alan Scott
Mr Terrific (Michael Holt)
Jay Garrick
Sandman (Wesley Dodds)
"You don't ever quit. Not even to your last drop of blood. You got folks relyin' on you then you just can't afford to." Sean Noonan-Hitman #47
So many great characters already named here . . . still waiting for DC to let us know what the hell happened to the JSA!!!
Cyclone
Wildcat (Ted)
Stargirl
Power Girl
Jay Garrick
Jay Garrick
Alan Scott
Ted Grant
Kara Zor-L
Carter Hall
I'd go into honorable mentions, but that list is so long.
In no particular order:
Hawkman (Carter)
Wildcat (Ted)
Starman (Jack)
Hourman (Rex)
Jesse Quick (Jesse)