Superhero name with O
- Odin
- Optimus Prime
- Oblivion
- Omniman
- One punch man
- Omni man
- Oracle
- oliver queen
- One Punch Man
- Obliterator
- Otto Octavius
- Okoye
- Ozymandias
- Omega Red
- Osiris
- Advertisement
- occulus
- Octavious
- Oclin
- Omega Man
- Owlette
- Obituary
- Owl
- Obi Wan Kenobi
- octavius
- Onyx
- Obelix
- Odysseus
- Orpheus
- Omni-man
- Owlet
- Oggy
- omen
- Onslaught
- Octonaut
- Obsidian
- Osborn
- ozone
- olympus
- optimus
- Orphan
- Olivier
- Olympia
- Octagon Man
- Otto octavious
- orochimaru
- octaman
- Octonaughts
- oceanman
- oatman
- overlord
- Orange juice man
- old superman
- Oso
- Octavio
- olga
- Oilman
- Octodad
- olly
- Orlando cops
- octupus
- Advertisement
- Octavian
- Orin
- octupus man
- Ogre man
- Omicron
- Out
- oblivian
- octo-man
- oscar the great
- onceler
- Obie Wan Kanobe
- Odinson
- Oat man
- Orion Man
- ominous man
- oli
- Ox man
- Osmosis jones
- orian
- Orien
- oh great one
- Ophelius
- Orbit
- Orca
- Orange justice
- optimums prime
- Obliterater
- Obi wan
- opera
- Operah
- Ocelot
- Ozymandius
- OMEGA
- oysterman
- orville
- Overkill
- Oral man
- Optimis Prime
- Old man Logan
- Oak
The words in the list Superhero name with O come from players of the word game City, Country, River.