Ernst Frederik dresses similar to a bishop. He has white hair with the front standing slightly upward. He wears a white mask on his face, decorate with gold lines, that covers his forehead to nose. The mask hides the scars he received during the Blue Night. He also has monocle over his left eye. While he possesses the same turquoise eyes as his daughter and youngest grandson, they carry none of Yukio and Yuri's warmth, bearing a stern and uncaring gaze.
He holds a deep hatred against Satan and Demons for ruining his life. In the anime only arc, Ernst gave the order to have his daughter, Yuri Egin, killed when he found out that she was pregnant with the children of Satan, indicating that his hatred is unbound by family love. He also is against the Grigori's decision to allow Mephisto to belong in the Order, going along with his dislike for Demons. He recruits Yukio since he believes that he is purely human, whereas Rin has awakened Demonic abilities. As such, he hates Rin, and even attempts to kill him to open the Gehenna Gate .
In the anime, he is seen being attacked by Satan during the Blue Night.
He claims to have overthrown and dismissed the Grigori and makes himself the leader of the True Cross Order. He and his followers start his plan to kill all the Demons in this world, joining him is Yukio.
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- ↑ 1.0 1.1 Ao no Exorcist Anime: Episode 1
- ↑ Ao no Exorcist Anime: Episode 23
- ↑ Ao no Exorcist Anime: Episode 20