Welcome to the first part of the trilogy. Mattie has been a part of the Avengers for nearly a year now. She gets along with the team fairly well but has the best relationship with the brothers Thor and Loki. Since the beginning, Thor has been someone Mattie could always rely on, someone with whom she could talk about anything, her best friend. As for Loki, he and Mattie have had a soft spot for each other since the first day they met.