Ok, I'm going to go with even lesser known characters just for fun:
* Manhattan Guardian
* Technocrat (from The Outsiders)
* Zauriel
* Loose Cannon (from Bloodlines)
* Junior (from Young Heroes in Love)
* Zip Kid (also from Young Heroes in Love)
* Moonbow (from Firestorm)
* Zan
* Jayna
This is fun. Maybe I'll do the whole history of the Avengers.