| In the year 2138, virtual reality gaming is booming. Yggdrasil, a popular online game is quietly shut down one day. However, one player named Momonga decides to not log out. Momonga is then transformed into the image of a skeleton as "the most powerful wizard." The world continues to change, with non-player characters (NPCs) beginning to feel emotion. Having no parents, friends, or place in society, this ordinary young man Momonga then strives to take over the new world the game has become. |
| Name | Character | Episodes |
|---|---|---|
| Asami Seto | CZ2128 Delta (voice) | 52 |
| Aoi Yuuki | Clementine (Voice) | 52 |
| Satoshi Hino | Momonga / Ains Ooal Gown (Voice) | 52 |
| Akeno Watanabe | Virtuous King of the Forest (Voice) | 52 |
| Ayumu Murase | Nfirea Bareare (Voice) | 52 |
| Mikako Komatsu | Lupusregina Beta (voice) | 52 |
| Kenta Miyake | Cocytus (voice) | 52 |
| Asami Seto | Alpha (voice) | 1 |
| Suzuko Mimori | Gamma (voice) | 1 |
| Inori Minase | Beta (voice) | 1 |
| Ayaka Asai | Zeta (voice) | 1 |