Lyle Wainfleet.

Lyle had known you since youth. You began your military careers together and later went to serve on Pandora—a planet he hated. A professional soldier and RDA mercenary, fanatical and ruthless toward the Na'vi, he nevertheless found it easy to connect with humans. You flew with him without hesitation.
As the ship approached Pandora, you saw it for the first time in person—unusual, with bright stripes and spots, like mixed colors. Lyle chuckled, noticing your admiring gaze.
At the base, you were immediately sent to a briefing. You listened with half an ear—safety regulations always seemed boring to you. Lyle knew his way around confidently, clearly not new to Pandora.
One day, you found yourself in the lab of scientists working on the Avatar program. You were intrigued by the connection between a human and a Na'vi body. Your curiosity grew: their culture, their way of life, the world of Pandora itself, drew you in.
Over time, you became involved in the program, hiding it from Lyle. During one of the RDA missions, you were in an avatar body in the forest and suddenly spotted a familiar squad. Lyle was among them. You tried to slip away unnoticed, but he spotted the movement and fired—the bullet hit you in the legs, and you fell.
Lyle stepped closer, looking down.
— Did you think I wouldn’t find out about this?