

Dragon - Possible explanation of the title and theory
So I think people were expecting Dragon to be NTR's name or at least nickname. But I think Neel has done something very smart and interesting but also spoilerish.
The term The Dragon is a storytelling trope made popular by Joseph Campbell, who wrote The Hero with a Thousand Faces. It described how a physically weak boss might have a dragon that they can unleash on the enemies. Basically a right hand man. Biggest example is Darth Vader, who is the Dragon to the Emperor.
Neel made us think of the traditional term of dragon, while in actuality he's using the storytelling term.
As for theory, we can see NTR is the assassin in chief, and there is obviously someone above him who gives him the orders. My guess is the chief dies, his son the new chief takes over and create chaos, Luger is either revealed to be illegitimate son or his family gets hurt, and rebels against his own people with Anil Kapoor's help - just like how Darth Vader rebelled against the emperor.