Cornelius Agrippa

Cornelius Agrippa first shows up in A Shadow Bright and Burning to test the girls of Brimthorn School for Girls to find The Chosen One. During a fight between a group of Korozoth's Familiars, Henrietta and Rook, Henrietta reveals her fire powers and instead of being burned as an outlawed witch, Agrippa takes Henrietta, and Rook, to London to begin her role as The Chosen One.