Cadmon Reyes (Earth-5875)

"Your brother was a hero. A soldier who did not give up."

- - Daniel Black to Thomas Reyes

Cadmon Reyes was a junior officer of the UNSC Marine Corps and an ODST. The elder son of UNSC veteran Colonel Audrey Reyes and brother of Captain Thomas Reyes, he was assigned to the 10th Shock Troops Battalion.

Early life
During his tenure at the Corbulo Academy of Military Science, Cadmon was highly regarded by his superiors. Cadmon graduated second in his class, with many of his colleagues believing he would pursue a career in the Office of Naval Intelligence, which surprised them when he chose to join the UNSC Marine Corps as an ODST When his brother Thomas joined in, he started living on his brother's shadow, failing to gain his reputation, most duo to the tolerance of the Insurrectionists.

Secession
Through the Insurrection, Cadmon was stationed on Jericho VII in 2525, where he gained the "Death Head" tattoo. He was later sent to the jungles of Arcadia, where he became known as "Volcano" after he drank water from a polluted river that gave him diarrhea.

Cadmon was later stationed on Andesia. During a violent firefight between ODSTs and Insurrectionists which lasted for hours, Tomás Ridge, a childhood friend of Cadmon, was killed in action, which deeply depressed Reyes, who thought about killing himself. Afterwards, he shaved his hair as a tribute to Tomás. Through the conflicts, Cadmon kept in contact with Thomas through the Internet and video calls.

Death
Eventually, all of his squad was killed by Insurrectionists on Andesia, including himself. Because there were no remains of Cadmon, his mother Audrey saw that Thomas should not leave Corbulo for the funeral of his brother. Despite the event leaving a huge emotional wound on Thomas, he came to terms with Cadmon's death.