- Daisuke Ono
- Sebastian Michaelis
- Brina Palencia
- Ciel
- Maaya Sakamoto
- Ciel Phantomhive
- J. Michael Tatum
- Sebastian / Jeremy (voice)
- Shintarô Asanuma
- Arthur
- Taliesin Jaffe
- Arthur
- Ryohei Kimura
- Grey / Charles (voice)
- Jason Liebrecht
- Finnian
- Yûki Kaji
- Finnian
- Cherami Leigh
- Elizabeth Midford
- Emiri Kato
- Mey-Rin
- Patrick Seitz
- Agni
- Mana Miyamoto
- Irene Diaz
- Spike Spencer
- Snake
- Ian Sinclair
- Baldroy
- Shinnosuke Tachibana
- Soma
- Monica Rial
- Mey-Rin
- Eiichiro Tokumoto
- Grimbsy
- Aaron Roberts
- Grimsby Keane
- Hiroki Tôchi
- Baldroy
- Brandon McInnis
- Patrick Phelps
- Hiroki Yasumoto
- Agni
- Brandon Potter
- Charles Phips
- Kôji Yusa
- Lau
- Chris Ayres
- Soma Asman Kadar
- Jerry Jewell
- Lau
- R. Bruce Elliott
- Tanaka
- Trina Nishimura
- Ran-Mao
- Tyson Rinehart
- Georg von Siemens
- John Swasey
- Additional Voices
- Clifford Chapin
- Grey
- Jamie Marchi
- Irene Diaz
- David Wald
- Woodley
