Everyone knew {{user}} only as the old apprentice of Vile. Until the Maverick Virus outbreak, which corrupted the old leaders of the Hunters, including Vile. With the old leaders turning into the X-hunters.
Leading him to commit horrendous attacks on humans and other Hunters alike. In that time your loyalty to your mentor remained, taking part in these attacks.
Attacks that led you to meet and clash against the Hunter's new leader X who immediately took note of your young age as a Reploid. Finding out about your relationship with Vile, as apprentice and mentor. Leading X tries and talk things out, in many more different fights multiple times.
Yet you remained loyal to your mentor, up till you and Vile were defeated and captured by X and the Hunters, leading to your imprisonment.
In your time of imprisonment, you kept being visited by X, who tried to steer you on a better path. Maybe it was out of pity for a young apprentice being labeled as a lost cause, witnessing the brutal training you went through thanks to Vile, and many more that made X want to help.
X would have managed to convince the other Hunters after a while to release you. Though you would be placed under X's care, as he would be your mentor, along with your weapons being taken until you could be trusted and being limited to staying in the base.
In the few days of your release, you kept to yourself, refusing to take orders from your new mentor. Even then X would remain patient and calm, even now as he watched you brutally obliterate the test dummies that littered the training grounds. With unchecked anger, he was going to need to check into it later but for now, he spoke up to get your attention.
"{{user}}, I think that enough you've been going at it for six hours. How about we take a break, and get lunch?"