These are comprehensive lists of casts in each game, sorted by canon. If any are missing, leave a comment to have them added.

Ace Attorney → courtrecords

Avatar: The Last Airbender/Legend of Korra → spreadsheet

Axis Powers Hetalia → spreadsheet

Dongan Ronpa →  spreadsheet

Final Fantasy → spreadsheet

Fire Emblem → fe_directory 

Game of Thrones → freeclimbs

Homestuck → spreadsheet and roll call

Madoka Magica → medukameguca

Magi → labyrinthofmagic

Mass Effect → masseffectory

Neon Genesis Evalgelion → uglycrying

Persona/Shin Megami Tensei → smt_compendium

Professor Layton → professorlaytondirectory

Tales Series → spreadsheet

Teen Wolf → thebestiary 

Tiger &  Bunny → spreadsheet

Touhou → easternstory  and roll call