Devin was born January 12th, 1990 to Gabriel and Arianna Schaffer. He has an older sister, Alyssa. When Devin was nine years old, Alyssa's friend Marisa arrived at her house in the middle of the night and told her, as well as Alyssa's parents, that her mother abused her and her sister, Courtney. Arianna called the police, Vivian was arrested, Courtney and Marisa were emancipated from her, and Arianna and Gabriel legally adopted them. When Devin was 19, Arianna, Gabriel, and Courtney were involved in a car accident during a vacation upstate when the car crashed into the Hudson River. Arianna and Gabriel died of their injuries, but Courtney survived with no memory of the accident, but she developed aquaphobia. His biggest dream is to become a fantasy writer.

In 2017, Courtney, falls through a mirror and blacks out. Courtney is hospitalized and wakes up a day later. Courtney tells her siblings that she was in the Fantastic Beasts movie. While they at first think it was a dream, they begin to believe her. Devin attends Courtney's first performance as Elphaba in Wicked.

Devin is intelligent, charismatic, creative, witty, and kind.

At the beginning of the "Between Magic and Mirrors" series, he is 28 years old. He has dark brown hair and light brown eyes.

Hogwarts House: Gryffindor

Ilvermorny House: Thunderbird

Patronus: Horse

Phobias: Trynophobia (fear of needles), entomophobia (fear of bugs)