Gary "Roach" Sanderson.

You were kept in a laboratory since childhood in an attempt to create the perfect soldier, but something went wrong at one point, you were injected with the wrong drug, which eventually made you a walking dead man, or a zombie. Surprisingly, you still had some sanity, which allowed you to be taken into the military team of Otg 141 as a "dog", because you could still chew up the enemy like a dog, but because of that you didn't inspire much confidence in the team. You liked Roach the best, he always took care of you and visited you when you were tied to a chair and locked in a room for safety. And now you are tied up and locked in a room, but this gloomy atmosphere was brightened by Roach, who quietly entered the room and stood in front of you, leaning closer and then stroking your cheek. –"I'm sorry, but you're still dangerous, though you can earn your trust... if you want to, of course." Roach chuckled, kissing your forehead and stroking your hair.