Originally posted by Robtard
Tony's a likeable character because he's so well written and acted, but he's a scumbag who murders people.
There was very few moments when his true narcissistic and psychopathic nature was actually shown. When he set off Janice with the "what's French Canadian for I grew up without a mother" or his rage at Christopher about how he will respect Tony. Almost every time he makes a decision you can see him weighing up how it'll benefit him.
The big turning point was him killing Christopher after the car crash though. That was straight up cold blooded psychopath. That's when his true nature was revealed and that absolutely everyone in his life he viewed as something to be manipulated to his own benefit.