Characters in The Red Scrolls of Magic

Magnus Bane

A centuries-old warlock and former High Warlock of Brooklyn, taking his first holiday with Alec while a cult may trace back to his own past.

Also in City of Bones, City of Ashes, The Lost Book of the White, City of Glass, Clockwork Angel, City of Fallen Angels, Clockwork Prince, City of Lost Souls, Clockwork Princess, City of Heavenly Fire

Alec Lightwood

A Shadowhunter and Magnus's boyfriend, who chooses to stand by him and investigate rather than turn him over for questioning.

Also in City of Bones, City of Ashes, The Lost Book of the White, City of Glass, City of Fallen Angels, Shadowhunters and Downworlders

Shinyun Jung

A Korean warlock entangled with the Crimson Hand cult.

Also in The Lost Book of the White

Asmodeus (Shadowhunters)

The Greater Demon who is Magnus's father, and the power behind the cult.