Maki Kawase as Will
Shouya Chiba as William G. Maryblood
Katsuyuki Konishi as Blood
Yui Horie as Mary
Ayumu Murase as Menel
Nobuo Tobita as Gus
Eri Suzuki as Bee
Kouji Yusa as Tonio
Aoi Yuuki as Gracefeel
Hiroki Takahashi as Stagnate
Kenji Nomura as Reystov
Minoru Inaba as Bart Bagley
Atsushi Tamaru as Ethelbald Rex Southmark
Gou Shinomiya as Lou
Ken'ichirou Matsuda as Gelrays
Keiko Watanabe as Anna Bagley
Sanae Kobayashi as Dine