John-B216 was a Spartan-III Commando in the UNSC Navy Special Warfare. He was member of fireteam Archangel.
Tyler and his team was only 12 years old when they were sent on Operation: TORPEDO, his company was ordered to destroy the Covenant refinery. His role during the battle was destroying a cooling station. At some point after Code Omega Three was authorized, the remains of the fireteam broke contact and eventually made it to the an extraction pod.