Main Characters:
Red:
Sarge
Lopez
Simmons
Grif
Donut
Doom Slayer
Blue:
Caboose
Church
Tucker
Sister
Antagonists:
Warden Eternal
Cyberdemon
Didact
Tyrant
Cacodemons
Icon Of Sin
Leviathan
Behemoth
Lucifer (Main Villain)
+ All Characters Of Halo & Red VS Blue