First off, a shout-out to any horror fandom characters! We definitely want you and your expertise! This is definitely including, but by no means limited to, Silent Hill, Fatal Frame, Resident Evil, Coraline, Shadow Hearts, and Haunting Ground!

We also have a solid handful of canons so far--and not only do we accept most fandoms, but we also are open to AUs and Original Characters as well! In fact, we have a growing cast of diverse OC's and would love to have more to join them! Anyone is welcome, of course, but casts you could app into are:

The 4400:
Taken: Maia Rutledge
Wanted: Anyone

9:
Taken: 7
Wanted: Anyone!

Air Gear:
Taken: Akito/Agito/Lind Wanijima, Kaito Wanijima, Itsuki "Ikki" Minimi
Wanted: Simca, Ringo, Kazu

American Horror Story:
Taken: Vivien Harmon
Wanted: Anyone!

Axis Powers Hetalia:
Taken: Belgium
Wanted: Anyone! A Spain, Veneziano/Italy, Prussia, Russia or a Sweden especially would be nice!

Avatar: The Last Airbender:
Taken: Sokka
Wanted: Anyone

Babylon 5:
Taken: Susan Ivanova
Wanted: Anyone! Bester, Sheridan, Gerriballdi, Sinclair, Franklin, Lando, G'Kar, Kosh, Morden, Marcus would be well loved.

Bleach:
Taken: Hollow Ichigo, Orihime Inoue
Wanted: Ichigo Kurosaki! Other Arrancar! Especially Grimmjow, Syazel, Luppi and Nnoitra!

Buffy the Vampire Slayer:
Taken: Buffy Summers, Dawn Summers
Wanted: Anyone!

Chrono Trigger:
Taken: Magus/Janus of Zeal
Wanted: Anyone!

D.Gray-Man:
Taken: Tyki Mikk
Wanted: Anyone!

Death Note:
Taken: Mello, Light Yagami, L
Wanted: Ryuk, Sayu, Mikami, anyone!

Doctor Who:
Taken: The Eighth Doctor, the Tenth Doctor, Jamie McCrimmon, Rose Tyler
Wanted: Anyone!

Fairy Tale:
Taken: Natsu Dragneel
Wanted: Anyone!

Fatal Frame:
Taken: Mio Amakura, Rei Kurosawa
Wanted: Anyone!

Final Fantasy VII:
Taken: Elena
Wanted: Aerith, anyone!

Final Fantasy IX:
Taken: Vivi Orunitia
Wanted: Anyone!

Firefly:
Taken: River Tam, Kaylee Frye
Wanted: Simon Tam, Malcolm Reynolds, or anyone!

Fullmetal Alchemist:
Taken: Nina Tucker
Wanted: Anyone!

Grimm:
Taken: Monroe
Wanted: Anyone!

Hakuouki:
Taken: Saitou Hajime
Wanted: Anyone!

Harry Potter:
Taken: Harry Potter
Wanted: Anyone

Hellboy:
Taken: Liz Sherman
Wanted: Hellboy, Abe Sapien, John Myers, Kate Corrigan, Johann Kraus, Roger, Ben Daimio, Trevor Bruttenholm (Professor Broom), Lobster Johnson, Grigori Rasputin, anyone! Movie or Comic verse welcome!

The Hunger Games
Taken: Katniss Everdeen
Wanted: Anyone!

Ib:
Taken: No one, currently
Wanted: We'd love to see the start of a cast!

Invader Zim:
Taken: Dib
Wanted: Gaz, especially!

Katekyo Hitman Reborn
Taken: Binachi, Byakuran, Chrome, Enma, G, Giotto, Gokudera, Lambo Bovino, Rokudo Mukuro, Shouichi Irie, Spanner, Tsuna, Xanxus
Wanted: Hibari Kyouya, Daemon Spade, Alaude, Ken, Chikusa, M.M., Lancia

Kingdom Hearts
Taken: Lexaeus, Riku, Sora's Heartless, Vexen, Xehanort, Zexion/Ienzo
Wanted: Riku Replica, other Datas, Anyone!

Legend of Spyro:
Taken: Cynder
Wanted: Anyone!

The Legend of Zelda: Ocarina of Time:
Taken: Link
Wanted: Anyone!

The Legend of Zelda: Skyward Sword:
Taken: Link
Wanted: Anyone!

Marvel:
Taken: Sif, Loki, Charles Xavier (all movie-verse)
Wanted: Thor, anyone-- especially more MCU characters.

Megaman:
Taken: X
Wanted: Anyone!

Metal Gear Solid:
Taken: Sunny
Wanted: Anyone!

Mobile Fighter G Gundam:
Taken: Schwarz Bruder
Wanted: Anyone!

Naruto:
Taken: Uchiha Sasuke, Uchiha Shisui, Uchicha Itachi
Wanted: ANYONE AND EVERYONE EVER. We would adore the older and obscure characters--parents like Fugaku and Hiashi and even Chiyo, or the support cast like Ibiki and Iruka, or even blasts from the past like Sandaime or Danzou or Minato. Villains would be wonderful, too, both Akatsuki and otherwise. We would love to see if we could assemble the whole Hyuuga family here, Neji, Hizashi! I know there must be people with those muses out there. Headcanon is welcome!

Nash Bridges:
Taken: Angel
Wanted: Anyone!

Pandora Hearts:
Taken: Alice, Gilbert, Glen, Oz, Vincent
Wanted: Jack Vessalius

Persona 4:
Taken: Teddie
Wanted: Anyone!

Phantasy Star IV:
Taken: Alys Brangwin, Rune Walsh
Wanted: Anyone!

Pokemon Conquest:
Taken: Enzan
Wanted: Anyone!

Resident Evil:
Taken: Claire Redfield, Leon S. Kennedy
Wanted: Chris Redfield, Luis Sera, Krauser, anyone else to make Leon's life hell

Rule of Rose:
Taken: Jennifer
Wanted: Anyone

s-CRY-ed:
Taken: Sou "Kit" Kigetsuki
Wanted: Anyone!

Saints Row:
Taken: Alex Marino
Wanted: Anyone!

Shin Megami Tensei: Digital Devil Saga:
Taken: Bat
Wanted: Anyone

Silent Hill:
Taken: James Sunderland, Heather Mason
Wanted: Anyone!

Supernatural:
Taken: Ben Braeden, Castiel, Mary Winchester, Rachel, Sam Winchester, Dean Winchester, Gabriel
Wanted: Anyone!

Tales of the Abyss:
Taken: Luke Von Fabre
Wanted: Anyone!

Teen Titans:
Taken: Raven
Wanted: Anyone!

Twin Peaks:
Taken: Laura Palmer
Wanted: Anyone!

Umineko No Naku Koro Ni:
Taken: Belphegor of Sloth
Wanted: Anyone!

Vampire Academy:
Taken: Rose Hathaway
Wanted: Anyone!

Wolf's Rain:
Taken: Blue
Wanted: Anyone!

Xenosaga:
Taken: chaos
Wanted: Anyone!

Yume Nikki:
Taken: No one
Wanted: We'd love to see the start of a cast!

Yuugiou:
Taken: Bakura Ryou
Wanted: Anyone!