Karael

Karael was one of the first Grigoris to be made after the creation of humanity. His first charges were Adam and Eve's children: Cain, Abel, and Alastair. Through his years of protection he developed a bond with Alastair, and his carelessness wound up with all three children lost to him. Upon being reunited with Alastair as a demon, Karael sacrificed himself to save another of his charges, being desperate to prove himself to Heaven, but also because he missed him. When Heaven learnt of the betrayal, Karael was imprisoned in Heaven's dungeons where he was supposed to remain until God returned and judged him. Instead he was placed under the care of Naomi and re-purposed into the first of the Slayer species.

After being cast out of Heaven by Metatron's spell, Karael decided to retire as there we no longer any threats from demon-kind. All big shots had been eliminated by one way or another, and thus the slayer's job was done. Karael now lives out his days in Rio De Janeiro, Brazil, unaware of anything which has happened or is happening.