Villain with O
- Ogre
- Otto Octavius
- Octavious
- Osama bin laden
- Octavius
- Odin
- Overlord
- Omni man
- Omega
- Oblivion
- Orochimaru
- Omniman
- OJ Simpson
- onceler
- Ozymandias
- Advertisement
- Otto
- Orion
- Orc
- Oliver
- osborn
- Obito
- Osama
- Ozai
- Osborne
- Octavian
- Orcs
- othello
- octoman
- Oracle
- Otto octavious
- oswald cobblepot
- Oman
- Ophelia
- Oberon
- Obadiah Stane
- Oswald
- Omega red
- Odd Job
- Onslaught
- Oddjob
- O'hare
- octo octavius
- orange
- Octavio
- Oger
- Orange man
- Oogie Boogie
- Octopus Doctor
- Obliterator
- Ogres
- octavia
- oedipus
- Orson
- Octavios
- Oculus
- Omicron
- Omarosa
- OSCAR
- owen
- Octane
- Advertisement
- orpheus
- Oli London
- Ocean
- oliver twist
- ock
- Octavias
- octupus
- ozzy
- Otello
- orlando
- Ozark
- Orochi
- Owlman
- Opps
- Oddball
- Om puri
- Osbourne
- Ork
- Outlander
- Ostrich
- Ogar
- Oni
- Octopi
- orson welles
- Outsider
- Opal
- Orangutan man
- odile
- Orca
- Otto Von Bismark
- Ohio
- olive
- Ojoker
- oclin
- Omkara
- Oligarchs
- Oh no
The words in the list Villain with O come from players of the word game Categories game.