Katsuyuki Konishi : Tatsumi Oga
Miyuki Saw:hiro : Beelzebub/Berubō

Aki Toyosaki : Aoi Kunieda
Daisuke Hirakawa : Alex Rodriguez Ichirō Shinjō
Daisuke Kishio : Shintarō Natsume
Haruna Ikezawa : Shizuka Nanami
Hiroki Takah:hi : Daimaō
Kazuhiro Yamaji : Jabberwock
Keiichi Nakagawa : Mitsuteru Sakaki
Kenji Fukuda : Kaname Izuma
Nobuhiko Okamoto : Hisaya Miki
Sayaka Kinoshita : En-Oh
Seirou Ogino : Tatsuya Himekawa
Shinshū Fuji : Saotome Zenjūrō
Shinya Takah:hi : Gou Hiromichi
Shizuka Itou : Hilda
Takahiro Mizushima : Takayuki Furuichi
Tomokazu Seki : Hidetora Tōjō
Tomokazu Sugita : Hajime Kanzaki
Tomomichi Nishimura : Behemoth
Wataru Takagi : Bathym de Emna Alaindelon

Akimitsu Tak:e :
Reiji Kiriya (eps 33, 35-36)
Shouji Aizawa
Akio Kato : Furc: Rachmaninoff
Aoi Yūki : Chiaki Tanimura
Ayahi Takagaki :
Kōta Kunieda
Miss Misako (ep 54)
Nene Ōmori
Tōjō (child)
Ayaka Shimizu :
Female Student A (ep 54)
Female Student C (ep 55)
Honoka Furuichi
Ryōko Asuka
Daisuke Hirakawa : Odonel
Haruka Tomatsu :
Angelica (ep 24)
Yuka Hanazawa
Haruna Ikezawa : Shimazu (ep 51)
Hidenori Takah:hi :
Delinquent 2 (ep 1)
Good Night Shimokawa
Graphel
Hiroshi Iw:aki :
Ittōsai Kunieda
Takah:hi (teacher; eps 58-60)
Hiroto Kazuki :
Takumi Sadohara
Teimo A (ep 36)
Yata
Hitomi Nabatame : Torii (ep 51)
Kaori Fukuhara : Lamia (ep 19)
Keiichi Nakagawa :
Delinquent A (ep 2)
Delinquent D (ep 1)
Salamander
Keisuke Fujii :
Delinquent D (ep 2)
Delinquent N (ep 1)
Kengo Kawanishi :
H:ui (ep 54)
Kōsei Kuroki (Kagegumi)
Quetzalcoatl
Referee (ep 35)
Kenji Nomura : Takeshi Shiroyama
Kenji Utsumi :
Kusubonobu (ep 47)
W:boga (ep 48)
Kentarou Itou : Hecados
Kentarou Tone : Kaoru Jinno
Makiko Nitta : Onsen Owner (ep 57)
M:aaki Itatori :
Delinquent L (ep 1)
Teimo B (ep 36)
M:umi Asano : Agiel
Mina :
Female Student C (ep 54)
Izabella
Minako Kotobuki :
Kaoru Umemiya
Yolda
Nao Tōyama : Yuuko (ep 53)
Nao Yoshida : Taeko Furuna (ep 35)
Naoki Tatsuta : Koma-chan
Rie Takah:hi :
Akubaba
Oga's mother
Romi Park : Fab: (ep 48)
Ryo Wakabay:hi : Delinquent B (ep 2)
Ryoko Shiraishi : Naga
Saori Hayami : Isafuyu K:hino
Sayaka Kinoshita : Misaki Oga
Shintarō Asanuma : Kazuya Yamamura
Shinya Takah:hi :
Delinquent K (ep 1)
Soldier B (eps 45-46)
Takumi Dezaki (Kagegumi)
Shou Sudou :
Ikari (MK5)
Soldier C (eps 45-46)
Takayuki Kondo : Killer Machine Abe (ep 2)
Takuya Sato :
Delinquent 1 (ep 1)
Genma Isurugi (Headteacher)
Kido (Teacher)
Teruyuki Tanzawa :
B:ilisk
Daimaō's Confidant
Demon A (ep 48)
Demon C (ep 47)
Oga's father
Ryuuichi Sanada
Soldier D (eps 45-46)
Underling A (ep 53)
Unshō Onizuka (Kagegumi)
Tomoyuki Higuchi :
Kōtarō Mikagami (Kagegumi)
Ryuuji Sanada
Yōko Hik:a : Azusa Fujisaki
Yurie Kobori :
Female Student B (ep 54)
Sachura
Yūya Murakami : Zera