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