All characters are by their respective owners. Names are listed alphabetically by commonly-known name, in Western order (given-name family-name) where applicable. Links are provided to external information pages for research purposes.
Contents:
- Main characters
- Short-cameo characters
- Visual aliases
Main characters
- Akira Kogami; performer and Lucky Channel host (human female)
- Angry Nerd, game reviewer (human male)
- Azusa Nakano; rhythm guitarist (human female)
- Black Rock Shooter; warrior and case file subject's ally (human female)
- The Cheat; Strong Bad's sidekick (male)
- Cinema Snob; movie reviewer (human male)
- Cream the Rabbit; +involvement member (female)
- Cul; aspiring performer and case file subject's ally (humanoid female)
- Danny; Tourettes Guy (human male)
- Demoman (Tavish DeGroot); RED mercenary (human male)
- Engineer (Dell Conagher); RED mercenary (human male)
- Francis; zombie apocalypse survivor (human male)
- GLaDOS; Aperture Science supercomputer and administrator (humanoid female)
- Gumi; visiting secretary and case file subject's ally (humanoid female)
- Haku Yowane; case file subject's ally (humanoid female)
- Haruhi Suzumiya; SOS Brigade leader (human female)
- Heavy Weapons Guy; RED mercenary (human male)
- Kagami Hiiragi; student and GLaDOS's friendship partner (human female)
- Konata Izumi; student, otaku, and SOS Brigade supporter (human female)
- Len Kagamine; performer and case file subject's ally (humanoid male)
- Louis; zombie apocalypse survivor (human male)
- Luka Megurine; performer and case file subject's ally (humanoid female)
- Medic; BLU (team-switched) mercenary (human male)
- ???; performer and #SK09-HM10-07XX case file subject (humanoid female)
- Mikuru Asahina; time traveler and SOS Brigade member (human female)
- Minami Iwasaki; student and +involvement member (human female)
- Mio Akiyama; bassist and backup vocalist (human female)
- Miyuki Takara; student (human female)
- Neru Akita; cyberbully faction leader and case file subject's ally (humanoid female)
- Nostalgia Critic; movie reviewer (human male)
- Pyro; RED mercenary (human)
- Rick the Adventure Sphere; corrupted Aperture Science personality construct (male)
- Rin Kagamine; performer and case file subject's ally (humanoid female)
- Ritsu Tainaka; drummer (human female)
- Scout; RED mercenary (human male)
- Sniper (Mr. Mundy); RED mercenary (human male)
- Soldier (Mr. "Jane Doe"); BLU mercenary (human male)
- Space Core; corrupted Aperture Science personality construct (humanoid male)
- Spy; BLU mercenary (human male)
- Strong Bad; e-mail-checking wrestleman (human male)
- superslinger2007; posthumous Internet persona (virtual human male)
- Teto Kasane; case file subject's ally (humanoid female)
- Tsukasa Hiiragi; student and +involvement member (human female)
- Tsumugi Kotobuki; keyboardist (human female)
- Wheatley; prototype Aperture Science personality construct (male)
- Yoko Littner; sharpshooter and +involvement member (human female)
- Yui Hirasawa; lead guitarist and vocalist (human female)
- Yuki Nagato; data interface, SOS Brigade member, and +involvement member (alien humanoid female)
- Yutaka Kobayakawa; student (human female)
- Zoey; zombie apocalypse survivor (human female)
Short-cameo characters
- Alyx Vance; resistance member (human female)
- Chester A. Bum; moviegoer (human male)
- Chii; persocom (humanoid female)
- Film Brain; movie reviewer (human male)
- G-Man; interdimensional bureaucrat (human male)
- Ignatius Mortimer Meen; magician (human male)
- Itsuki Koizumi; esper and SOS Brigade member (human male)
- Judith Mossman; scientist and resistance member (human female)
- King Harkinian; King of Hyrule (human male)
- Kyon; SOS Brigade member (human male)
- Linkara; comic book reviewer (human male)
- Max; anthropomorphic rabbit "lagomorph" detective (male)
- Misao Kusakabe; student (human female)
- Nostalgia Chick; movie reviewer (human female)
- Orihime Inoue; "Loituma Girl" (human female)
- Rena Ryugu; student and alleged psychopath (human female)
- Sam; anthropomorphic dog detective (male)
- The Spoony One; game and movie reviewer (human male)
- Turret; Aperture Science sentry turret (female)
Visual aliases
- Francis - Tyrell Badd
- Haruhi - Kay Faraday
- Louis - Zak Gramarye
- Medic - Kristoph Gavin
- Scout - Matt Engarde
- Soldier - Quercus Alba
- Zoey - Trucy Wright
