((OOC - Slytherin Characters))
Emperor Palpatine - Star Wars universe, films/books
Oswald Cobblepot - Batman universe, TV(cartoon) (Not sure which, specifically.)
Ryuuji Otogi - Yu-Gi-Oh!, manga
Severus Snape - Harry Potter series, books/films
Lord Voldemort - Harry Potter series, books/films
Steerpike - Gormenghast, film/books by Mervyn Peake
Madame Thérèse Defarge - A Tale of Two Cities, book by Charles Dickens
Captain Denethor - The Lord of the Rings, books by J.R.R. Tolkien
Loki 7281 - Loki 7281, book by Roger Zelazny
Pansy Parksinson - Harry Potter series, books/films
Albel Nox - Star Ocean: Till the End of Time, video game
Uncle - Jackie Chan Adventures, TV(cartoon)
Lucius Malfoy - Harry Potter series, books/films
Anthony Crowley - Good Omens, book by Terry Pratchett and Neil Gaiman
Stewie Griffin - Family Guy, TV(cartoon)
Kiralla Jade Lliwellyn - original character
Shan Pu - Ranma, TV(anime)
The Metatron - Dogma, film
Esmeralda Weatherwax - Discworld series, books by Terry Pratchett
Chairman Trevor Goodchild - Aeon Flux, TV(cartoon)/film
Nagini - Harry Potter series, books/films
Scrooge McDuck - DuckTales, TV(cartoon)
Arnold J. Rimmer - Red Dwarf, TV
Seto Kaiba - Yu-Gi-Oh!, manga
Salazar Slytherin - Harry Potter series, books/films
Glorificus - Buffy the Vampire Slayer, TV
Tom Riddle - Harry Potter series, books/films
Ginny Weasley - Harry Potter series, books/films
King Bakura - Yu-Gi-Oh!, manga
Gregory House, M.D. - House, M.D., TV
Cthulhu - The Call of Cthulhu, books by H.P. Lovecraft
Horace Slughorn - Harry Potter series, books/films
Marik Ishtar - Yu-Gi-Oh!, manga
Narcissa Malfoy - Harry Potter series, books/films
Inara Serra - Firefly, TV and Serenity, film
Caligula - I, Claudius, TV(miniseries)
Drusilla - Buffy the Vampire Slayer, TV
Mokuba Kaiba - Yu-Gi-Oh!, manga
Rita Skeeter - Harry Potter series, books/films
Ultimecia - Final Fantasy VIII, video game
Ancalagon - The Lord of the Rings, books by J.R.R. Tolkien
Hannibal Lecter - Red Dragon/Silence of the Lambs/Hannibal, films/books by Thomas Harris
Damien Thorn - The Omen, films
Light Yagami - lightof_justice - Death Note, manga
Mystique - strangemystique - X-Men universe, comics
Elim Garak - simple_tailor - Star Trek: Deep Space Nine, TV
Gaius Julius Caesar - i_am_rome - Hercules: the Legendary Journeys and Xena: Warrior Princess, TV
Updated last Feb 18.