Deborah "Debbie" Grayson is a major character in Invincible, debuting as one of the deuteragonists of Season 1 and tritagonists of Season 2 and onwards. She is the wife of Nolan Grayson, the mother of Mark, and the legal stepmother of Oliver Grayson II.
For two decades, Debbie and Nolan shared a beautiful affectionate life alongside their son Mark, who would later become the superhero Invincible. Upon uncovering the reality of Nolan's affiliations, she begins to question everything she once understood, grappling with the truth that the man she thought she knew and loved was just a façade, all the while caring for her son Mark and her new stepson Oliver. She later starts a new relationship with her coworker, Paul.