Helena Grady

Helena Grady (ヘレナ＝グレイディ, Herena = gureidi) is a character and the antagonist in the Hyouken no Majusushi ga Sekai o Suberu.

She is the former instructor of Arnold Academy of Magical Arts until she betrayed her students just to kill them. She is actually a member of the Eugenics. She was defeated and sealed away by Ray White when he frozen her on ice.