Michael Terrill was a war hero and the older brother of Ray Terrill.
At some point Michael joined the United States Marine Corps. He died as a hero in one of the missions at 22 years old. 
His family is very proud of him, establishing a small memorial area in the house. Ray Terrill looked up to his brother and was inspired by him to become a superhero after he met his Earth-X doppelgänger.
Freedom Fighters: The Ray
Behind the scenes
- In the DC comics, Ray Terrill has a half-brother named Joshua Terrill.