Character

Omega the Ultimate Alpha

2

Omega the Unknown

3

Omega Titans

2

Omega White

1

Omega Wolverine

1

Omni-Man

7

Omnimax

1

Omnipotentis

1

Omnipotus

1

Omolola

1

Onaan

3

One Above All

4

One Below All

3

One-Punch Man

2

Onimar Synn

1

Onomatopoeia

2

Onome

1

Onslaught

4

Onslaught (Jihad)

1

Onyx

1

Onyxx

1

Oog

1

Opal Android 5947

1

Opal Luna Saturnyne

2

Operator

1

Ophelia Vermis

1

Optimus Primal

1

Optimus Prime

6

Ora Serrata

1

Oracle

10

Oracle (Nedor)

1

Oran Dargg

1

Orana

2

Orange Lantern Corps

1

Orb, The

2

Orbis Stellaris

1

Orca

2

Orchis

2

Ord

1

Order of St. George

4

Orghams

1

Orikal

1

Orion

5

Orion (Marvel)

1

Orista

1

Orka

2

Orko

1

Orla Jareni

1

Orman

1

Ornitho-Men

1