Jacob KANE - Batwoman/Security Forces (Commandant des Crows)
James OLSEN - Supergirl/Citizens (Propriétaire d'un petit journal)
Jefferson PIERCE - Black Lightning/Heroes (Black Lightning, Team Black Lightning)
Jennifer PIERCE - Black Lightning/Heroes (Lightning, Team Black Lightning)
Joe WEST - Flash/Security Forces (Capitaine du CCPD + Team Flash)
Joe WILSON - Arrow/Criminals
John CONSTANTINE - DC's Legends of Tomorrow/Heroes (Team Legends)
John DIGGLE - Arrow/Heroes (Spartan, Team Arrow)
John DIGGLE JUNIOR - Arrow/Citizens (Enfant)
Jonathan KENT - Superman & Loïs/Citizens (Lycéen)
J'onn J'ONZZ - Supergirl/Heroes (Martian Manhunter + Superfriends + Légion des Super Héros)
Joseph CARVER - Flash/Criminals
Jordan KENT - Superman & Loïs/Citizens (Lycéen)
Julia PENNYWORTH - Batwoman/Heroes (Tuxedo One, Bat-Team + Agent Crows)
Kara DANVERS - Supergirl/Heroes (Supergirl, Superfriends + Légion des Super Héros)Kate KANE - Batwoman/Heroes (Batwoman, Bat-Team + Légion des Super Héros)
Kelly OLSEN - Supergirl/Citizens (Psychiatre chez Obsidian)
Kyle CUSHING - Superman & Loïs/Citizens (Pompier)
Lana LANG-CUSHING - Superman & Loïs/Citizens (Gérante d'hypothèque)
Laurel LANCE (Earth-2) - Arrow/Heroes (Black Canary, team Arrow) (
scénario libre)
Lena LUTHOR - Supergirl/Citizens (PDG de Luthor Corp + Superfriends)Lex LUTHOR - Supergirl/Criminals
Loïs LANE - Superman & Loïs/Citizens (Journaliste)
Luke FOX - Batwoman/Heroes (Bat-Team)