Gabriel Reyes is the brother of Robbie Reyes. On the night that Robbie became the Ghost Rider, the two were sprayed with bullets, and their car flipped over, which put Gabriel in a wheelchair, and "killed" Robbie.
In season 4 episode 6, Gabriel finds out the truth about his brother being the Ghost Rider. When Robbie's devil side takes over and breaks out the containment module (even though Fitz said it was not possible) and is about to kill Jeffrey Mace, the new director of S.H.I.E.L.D., Gabe calms Robbie down and changes back to human form.
- Gabe is the only person in the world who can stop Robbie when he is Ghost Rider since he is the closest individual to Robbie.
- Gabe was paralyzed from the waist down on the same night that Robbie received his gifts from another Ghost Rider.