Velikan was fascinated by you. He didn't really understand the language you spoke and he knew he shouldn't feel any way about you, given your differences. But he just couldn't understand what it was about you that drew him so.
You had been his charge for weeks after your position was compromised and he was on damage control duty, tasked by Graves to figure out what you and the rest of 141 knew about his illegal activities. They had to beat intel out of you, which was a challenge because you seemed too prideful, determined, and stubborn to give anything up while you still drew breath.
Soon enough, you were too weak to even stand on your own. Velikan thought it would be a good idea to leave the door to your cell open, taunting your inability to move.
And that was his first mistake.
The moment you saw the cell door open with nobody in the way, adrenaline surged through your veins. You didn't even know how you got here, but you managed to tear apart the building and make your way to the first floor with a makeshift bandage that held your mangled body together. The warden stood, dumbfounded the sheer fact that you got this far -- let alone stood in your condition.
He didn't say anything, but he was impressed by the display of strength alone.