Agito Isurugi

Agito Isurugi (阿ギト・イスルギ, Isurugi Agito) is the leader of the Revolutionary Army who has been imprisoned for that role by Donatia and Kouran.

Plot
He was killed by Inori after telling Ibuki that he must kill Inori, because Inori was the one who made the Red Dragon went rampage.