O

Oggun
Oki O’Conn

Old Earth
Old Terra
Ol' Willie Pete
Omegas Borg Army
Omegas Clan Faction
Omegas U.N.M.
Omegas Wolves
Omicron Guard, 82nd [RND]
Onslaught 

OnyxOpal Dragons
Orcus

Order of the Carmelites
Orester
Osprey, Dr.
Otto Von Bismark
Overlords Clan Faction
Owen Van Doyen