Wilhelm Casper is a mercenary who works for Amalgam. He was also Kurz Weber's mentor as a sniper.
| Characters | |
|---|---|
| Main | Jindai Municipal High School |
| Sousuke Sagara • Chidori Kaname Teletha Testarossa |
Kyoko Tokiwa • Shinji Kazama • Mizuki Inaba • Ono D Hayashimizu Atsunobu • Ren Mikihara • Issei Tsubaki Eri Kagurazaka • Class 4 |
| Mithril | Amalgam |
| Jerome Borda Richard Mardukas • Peggy Goldberry Melissa Mao • Kurz Weber • Belfangan Clouseau • Yang Jun-Kyu • Gail McAllen Nora Lemming • Lian Shaopin Grace Wiseman Gavin Hunter • Wraith |
Leonard Testarossa • Gauron Gates • Xia Yu Lan • Xia Yu Fan Kurama • Lee Fowler • Andrey Kalinin • Wilhelm Casper |
| Other | |
| A-21 (Seina • Takuma Kugayama) • Zaied • Yoko Wakana • Nami | |