Earth-4

Earth-4 is the home of characters appearing in:

AC Comics


Charlton Comics


Fox Features Syndicate




and includes the following characters:

American Crusader

Avenger


Black Venus






Captain Flash

Captain Paragon/Paragon


Catman

Commando D


Darkfire


Green Lama

Hood


Jet Girl



Kitten

Miss Masque



Nightveil a.k.a. Blue Bulleteer

Paragon a.k.a. Miss Victory & Rad





Reddevil

Rocketman



Scarlet Scorpion



Stardust



Yankee Girl

A timeline for Earth-4 can be found here.