Seth Twiright, later known as the Demon of Wrath, was a scientist from the Magic Kingdom Levianta and the father of all HERs in the Third Period. Originally one of the surviving earthlings, he escaped from the Sin and reincarnated as a human. Afterward, Seth experimented with the creation of ghoul children and vessels of sin to increase the number of HERs in the world. Following the Levianta Catastrophe, Seth reincarnated again as the Demon of Wrath.