Manny Petrosian was born within the US. He was spread away from his younger brother Anoush Petrosian, as they both had different mothers. Manny grew up in the streets of LA, where he was doing drug business and the Gang he was affiliated with took him in as family from a very young age, since fifteen. He became part of shoot-outs, drug deals, he even had many murders on his name during various events he was participating in. Years later, he traveled towards Hrazdan to find his younger brother Anoush. He took him in with 'em and had him join the Gang. They both learned how to use guns as well, different kaliber of rifles and pistols. He even once got his hands on a M4-A1. As later he ended up in Chernarus along with his brother and the gang. They would continue doing business even if after the Outbreak. Manny is personally known to be very aggressive, he doesn't take anything from anyone, and would easily show his ruthlesness to everyone who opposes him.
Manny is known as the '' Sandman '' or '' Man-Man.''