The main antagonist of Zero Escape: Toki No Dilemma. Their true identity is Delta (Kyokugen Dasshutsu).
Wears a black, wide-brimmed hat, a Plague Doctor Mask, a Black Cloak, a Butterfly Pin, and black Elbow Gloves with claws. Often seen with a Staff in hand.
Not to be confused with:
- Zero (Kyokugen Dasshutsu), the main antagonist of Kyokugen Dasshutsu: 9 Jikan 9 Nin 9 No Tobira.
- Zero III, a character from Kyokugen Dasshutsu ADV: Zennin Shibou Desu.
- Zero Two (Darling In The Franxx), a character from Darling In The Franxx.
- 0², the true antagonist and final boss of Kirby 64: The Crystal Shards.