Villain with O
- Ogre
- Otto Octavius
- Octavious
- Osama bin laden
- Octavius
- Odin
- Overlord
- Omniman
- Omega
- Oblivion
- Orochimaru
- onceler
- OJ Simpson
- Ozymandias
- Otto
- Omni man
- Orion
- Otto octavious
- osborn
- Orc
- Osborne
- Orcs
- Oliver
- Obito
- Osama
- Ozai
- Octavian
- othello
- octoman
- Oracle
- Ophelia
- oswald cobblepot
- Oberon
- Omega red
- Odd Job
- Onslaught
- Obadiah Stane
- Oddjob
- octo octavius
- O'hare
- orange
- Oman
- Octopus Doctor
- Obliterator
- Octavio
- Orange man
- Oogie Boogie
- Oger
- Ogres
- Octavios
- oedipus
- octavia
- Om puri
- Oculus
- Omicron
- Orson
- Omarosa
- owen
- octupus
- Octavias
- orpheus
- Octane
- Owlman
- oliver twist
- ozzy
- Ocean
- Oli London
- OSCAR
- ock
- Oddball
- Onaga
- Opps
- olive
- Otto Von Bismark
- Orca
- Ork
- Ostrich
- Ogar
- Opal
- Ozark
- Ohio
- Octopi
- Oni
- orson welles
- Outlander
- odile
- Otto Octavias
- Outsider
- Orangutan man
- Otello
- orlando
- Owl man
- Orochi
- Osbourne
- oclin
- Ollie
- Otters
- Omkara
- Ojoker
- Oh no
Slová v zozname Villain with O pochádzajú od hráčov slovnej hry Meno, Mesto, Zviera, Vec.