"O" Anime Convention Guests
Guests who have made guest appearances at anime conventions:
- O'Barr, James - Writer / Artist
- O'Brian, Katy - Actor
- O'Brien, Dani - Web Comic Creator, All New Issues
- O'Brien, Liam - Actor
- O'Connell, Sean P. - Actor
- O'Donnell, John - Managing Director, Central Park Media
- O'Halloran, Brian - Actor
- O'Halloran, Jack - Actor / Boxer
- O'Hara, Maggie Blue - Actor
- O'Hara, Paige - Actor
- O'Hare, Heidi - Costume Designer, University of North Carolina at Charlotte
- O'hashi, Takashi - Musician
- O'Malley, Elizabeth - Costumer / Host, AnimeCons TV
- O'Mara, Sean - Writer
- O'Rear, Jim - Actor / Stuntman
- O'Reilly, Robert - Actor
- O'Reilly, Sean - Editor-in-Chief / Owner, Arcana Studios
- O'Rourke, Niall - Comic Creator
- O'Rourke, Shaun - Actor
- O'Shaughnessey, Colleen - Actor
- Oaks, Lee - Comic Artist
- Oat, Zach - Wizard Entertainment
- Obari, Masami - Director
- Obata, Takeshi - Manga Artist
- Ober, Arlon - Composer
- Oblivion Dust - Band
- Obsessive Costume Design - Cosplayers
- Ochikoshi, Tomonori - Producer, A-1 Pictures
- Ochman, Joe - Actor
- Octopimp - YouTube Personality
- Odagi, Mio - Manga Artist
- Odaiko New England - Taiko Drummers
- Odango, Philip "Canvas" - Cosplayer
- Odjick, Jay - Comic Book Writer / Artist
- Oezgen, Sedat - Artist
- Offer, The - Band
- Ogasawara, Muneki - Animation Producer, Kinema Citrus
- Ogata, Megumi - Actor / Singer
- Ogata, Naohiro - Producer
- Ogawa, Hiroshi - Director
- Ogawa, Masakazu - Producer
- Ogawa, Takahiro - Producer
- Ogg, Steven - Actor
- Ogura, Hiromasa - Art Director
- Ohara, Momoka - Actor
- Ohata, Koichi - Director
- Ohm-I, MC - Rapper
- Ohmi, Tomoe - Singer / Actor
- OhMyJeanMarie - Cosplayer
- OhMySophii - Cosplayer
- Ohnishi, Nobuyuki - Artist
- Ohno, Minoru - Professor / Producer, Shokei Gakuin University
- Ohtani, Ikue - Actor
- Ohtsuka, Tommy - Manga Artist
- Okabayashi, Kensuke - Artist
- Okada, Mari - Screenwriter
- Okada, Toshio - Founder, Gainax
- Okageo - Cosplayer
- Okamiya, Michio - Guitarist, Earthbound Papas
- Okamoto, Hideo - Mecha Designer
- Okamoto, Kyoko - Lecturer
- Okamoto, Maya - Actor
- Okamoto, Nobuhiko - Actor
- Okamoto's - Band
- Okamura, Tensai - Director / Animator
- Okamura, Wakana - Producer
- Okamura, Yoshiyuki - Manga Artist
- Okasaki, Miho - Actor
- Okasako, Nobuhiro - Animation Director
- Okawara, Kunio - Animation Director
- Okayado - Manga Artist
- Okazaki, Kosuke - Editor, Ultra Jump
- Okazaki, Takashi - Manga Artist
- Oki, Mamiya - Manga Artist
- Okiayu, Ryotaro - Actor
- Okiura, Hiroyuki - Character Designer / Animation Director
- Okouchi, Ichiro - Screenwriter
- Okubo, Rumi - Actor
- Okuda, Amy - Actor
- Okuda, Hitoshi - Manga Artist
- Okui, Masami - Singer
- Okumoto, Yuji - Actor
- Old Rusty Shack - Band
- Oldcodex - Musical Artists
- Oliff, Steve - Colorist
- Olivas, Estevan - Fandubber / Fraud
- Oliver, Jana G. - Author
- Oliver, Mark - Actor
- Oliver, Nicole - Actor
- Oliver, Tony - Actor / Producer / Director
- Olivetti, Ariel - Comic Artist
- Ollie, Kureiji - Hololive VTuber
- Olmos, Edward James - Actor
- Olsen, Jordan Blaza - Cosplayer
List continued...
- Olsen, Lillian - Translator / Interpreter, Viz LLC
- Olson, Dan - Puppeteer
- Olson, Olivia - Actor / Singer
- Omi - Web Comic Artist, Counter Culture
- OMNY Taiko - Taiko Drummers
- Omodaka - Composer
- Omori, Takahiro - Director / Writer
- Omundson, Timothy - Actor
- One - Virtual Artist
- One Hard Night - Band
- One-Eyed Doll - Band
- OneUps, The - Band
- Only One Ronin - Musician
- Ono, Kensho - Actor
- Ono, Manabu - Director
- Ono, Yuki - Actor / Musician
- Onyskow, Joseph - Writer / Manager, Dragon Spirit Studios
- Onyskow, Kristene - Dragon Spirit Studios
- OoLaLa, Miss - Cosplayer
- Openworld - Musicians
- OpM, DJ - Disc Jockey
- Oppenheimer, Alan - Actor
- Oppliger, John - Anime Guru, AnimeNation
- OR3O - Musician
- Orange, David - Actor / Writer
- Order of Týr - Band
- Ordiway, Bailey - Author
- OreSkaBand - Band
- Organ, Alex - Voice Actor
- Origa - Vocalist
- Orikasa, Ai - Actor
- Orikasa, Fumiko - Actor
- Orito, Shinji - Composer
- Orlando, Steve - Writer
- Orlea, Kristina - Author
- Orochi X - Cosplayer
- Orr, Corinne - Actor
- Orrù, Daniela - Comic Artist, Dany&Dany
- Ortega, Belén - Comic Artist
- Ortega, Joshua - Author
- Ortiz, Lisa - Actor
- Ortiz, Mariela - Actor
- Ortiz, Phil - Animator
- Osaka, Hiroshi - Character Designer / Animation Director
- Osano, Fumio - Manga Editor, Kodansha LTD
- Osborn, Dr. - Magician
- Osborne, J. David - Author
- Osborne, Jonathan - Actor
- Osebold, Patti Reiko - Artist
- Oshii, Mamoru - Director / Writer
- Oshimizu, Sachi - Manga Artist
- Oshiro, Mark - Writer
- Osmond, Andrew - Journalist
- Ossan, Chicchai - Mascot
- Oster, Kris - Musician
- Osueke, Austin - CEO, eigoMANGA
- Osuga, Akito - Actor
- Ota, Katsushi - Editor
- Ota, Yuko "Aido" - Web Comic Artist, Fallen / Johnny Wander
- Otaku Army, The - Performers
- Otaku Duet - Musicians
- Otaku Ongaku - Band
- OTAKUpassport - DJs
- Oto-Wa Taiko - Taiko Drummers
- Otokage - Band
- Otomo, Katsuhiro - Writer / Director
- Otsuka, Hiroki - Manga Artist
- Otsuka, Manabu - CEO, MAPPA
- Otsuka, Masahiko - President, Studio Trigger
- Otsuka, Taku - Producer, Bandai
- Ott, John - Artist, Studio Go
- Otten, Katie - Actor
- Ottley, Ryan - Comic Artist
- Oulette, Martin - Assistant Editor, Protoculture Addicts
- Oum, Monty - Animator / Director, Rooster Teeth
- Ousley, Ian - Actor
- Outland Armour - Fabrication and Production Company
- OverClocked ReMix - Music Organization
- Overton, Wil - Illustrator
- Overwater, Rick - Comic Creator / Author / Musician
- Owada, Hideki - Mangaka
- Owen, Jesse Michael - Comic Artist / Illustrator
- Owen, Kai - Actor
- Owen, R. Danny - Author
- Owen, Race - Founder and President, Decipher Pictures
- Oxley, Kate - Actor
- Oxx, Mike - Sculptor, Ninja Studios
- Oyama X Nitta - Musicians
- OZ - Band
- Ozaki, Masayuki - Executive Producer, Sunrise, Inc.
- Ozaki, Takaharu - Filming Advisor, A-1 Pictures
- Ozawa, Kaoru - Animation Director
- Ozawa, Tadashi - Author / Artist