Netflix Japan's official X account announced the cast, additional staff, and theme songs for the anime adaptation of Scott Westerfeld's Leviathan novel on Friday. The anime will debut worldwide exclusively on Netflix on July 10.

Main Cast
Prince "Alek" Aleksandar: Ayumu Murase (D.Gray-man Hallow)
Sharp: Natsumi Fujiwara (Tokyo Ghoul:re)
Count Volgar: Shunsuke Sakuya (Ginga Eiyuu Densetsu)
Klopp: Yasuhiro Mamiya (Bleach: Sennen Kessen-hen)
Dr. Nora Barlow: Mie Sonozaki (Yuukoku no Moriarty)
Newkirk: Ivan Shibata (Kaijuu 8-gou)
Lilit: Ai Fairouz (Kage no Jitsuryokusha ni Naritakute!)
Nikola Tesla: Hiroki Touchi (Cyberpunk: Edgerunners)
Nene: Ikuko Tani (Ginga Tetsudou 999)
Hoffman: Genta Nakamura (Kidou Senshi Gundam: GQuuuuuuX)
Rigby: Daichi Hayashi (Toaru Kagaku no Railgun T)
Matthews: Satoshi Niwa (Tensei Kizoku, Kantei Skill de Nariagaru)
Thomas: Naoto Kobayashi (Grisaia no Rakuen)
Hirst: Yukitarou Namura
Leviathan's Captain: Ryousuke Higa (Ore dake Level Up na Ken)
George Darwin: Michio Hazama (Macross)
Pavel: Takahiro Fujiwara (Boku no Hero Academia)
Zaven: Naomi Kusumi (Youjo Senki)
Sultan: Tesshou Genda (City Hunter)

Staff
Series Composition: Yuuichirou Kido (Dr. Stone)
CG Chief Director: Eiji Inomoto (Beastars)
Art Director: Tadashi Nakajima
Character Design: Ayumi Kurashima (Shangri-La Frontier)
Mechanical Design: Takehiko Hoashi (Sand Land), Shinobu Tsuneki (Kaijuu 8-gou)
Color Design: Sayo Motegi (B: The Beginning Succession)
Creature Design: Lee Yamamura
CG Directors: Takayuki Miyakoda (Ginga Kikoutai Majestic Prince), Maiko Iketani (Beastars), Shunsuke Aoki (Saijaku Muhai no Bahamut), Tadao Morohashi
Modeling Supervisor: Jun Nagakawa (Active Raid model design)
CG Facial Director: Kaori Kunishima (Ao no Kanata no Four Rhythm 3DCG animation)
VFX Art Directors: Hirotsugu Hayakawa (Trigun Stampede), Kensuke Yamamoto (Houseki no Kuni)
Special Effects: Takeshi Ogawa
Editing: Rie Matsubara (EDIT ROOM SEYAMA) (Shoushimin Series)
Director of Photography: Noriyuki Ueda (T2 Studio) (Ousama Ranking)
Voice Director: Yoshimi Ude
Re-Recording Mixer: Hiro Ishizaka
Supervising Sound Editor: Masatoshi Katsumata (Bokura no Yoake)
Sound Production: Sonilude
Animation Producers: Takuya Ogawa (Platinum End), Daigo Ikeda
Producers: Katrina Minett, Yoshihiro Watanabe (Trigun Stampede assistant producer)
Co-Executive Producer: Scott Westerfeld

Joe Hisaishi (Sen to Chihiro no Kamikakushi) is producing the opening theme "Hitosuji no Michi e" and the ending theme "Sono Saki no Sora e" featuring Diana Garnet (Naruto: Shippuuden).

Christophe Ferreira (Hirune Hime: Shiranai Watashi no Monogatari storyboard) is helming the anime at Orange. Nobuko Toda (Ultraman Final), Kazuma Jinnouchi (RWBY: Hyousetsu Teikoku) are composing the music.

Westerfeld published the steampunk novel in 2009 as the first part of a trilogy. The second and third novels, Behemoth and Goliath, were released in 2010 and 2011.

Source: Netflix Japan on X