Zack Mazursky

Zack Mazursky is a main character in 2006 crime drama film Alpha Dog. He is based on Nicholas Markowitz who was kidnapped and murdered at the age of 15 after a feud over drug money between his half-brother Benjamin Markowitz and Jesse James Hollywood. Zack is portrayed by Anton Yelchin.

Kidnapping and murder
The feud between Jake Mazursky, Zack's older half-brother, and Johnny Truelove, a mid-level drug dealer, began over the alleged $1,200 debt owed to Truelove by Mazursky.

Trivia

 * Anton Yelchin who portrayed Zack in the film, said that the pool scene between his character, Amanda Seyfried and Amber heard's character was his least favourite part in the film.