Vincent Chase (Entourage)
This character is a young, good looking actor who let success go to his head by indulging in self-destructive behavior. Like a few real life actors I could mention, Vince partied with porn stars and showed up at work all coked out and/or drunk. Cocaine and alcohol were Vince's friends, well enemies, for some time until his real friends helped him experience life after rehab for a smoother path to sobriety.
Adrien Grenier stars as Vincent Chase in (Entourage)