Mamoru Miyano as Ultraman Zero / Darklops (voice)

Tatsuomi Hamada as Nao

Yū Koyanagi as Run

Tao Tsuchiya as Princess Emerana Luludo Esmeralda

Tamotsu Ishibashi as Hiro

Yasue Sato as Mina

Kaito Nitta as Young Run

Kaito Kobayashi as Young Nao

Minako Ide as Grandmother

Kenrô Nanbara as King Emerado

Yuka Hanabusa as Queen Emelulu

Maaya Takada as Princess Emeral

Sei Hiraizumi as Garu

Kitaro as Giru

Bengal as Guru

Hikaru Midorikawa as Mirror Knight (voice)

Tomokazu Seki as Glenfire (voice)

Hiroshi Kamiya as Jean-Bot (voice)

Tokuma Nishioka as Ultra Father (voice)

Hideyuki Tanaka as Zoffy (voice)

Susumu Kurobe as Ultraman (voice)

Kohji Moritsugu as Ultraseven (voice)

Jiro Dan as Ultraman Jack (voice)

Keiji Takamine as Ultraman Ace (voice)

Hiroya Ishimaru as Ultraman Taro (voice)

Hatsunori Hasegawa as Ultraman 80 (voice)

Sayoko Hagiwara as Yullian (voice)

Hiroyuki Miyasako as Kaiser Belial (voice)

Norio Wakamoto as Iaron (voice)

Taiyo Kawashita as Darkgone (voice)

Nobuyuki Ishida as Two-Dimensional Person (voice)

Koji Ishizaka as Narrator