Oh, and I just realized what Gus's backstory is from his time in Peru. He was a friggin General.
At the beginning of s3e7, Hector is on the phone discussing Gus while watching the two psycho cousins play in the yard. He says he won't work with Gus and says "I don't care who he knows. Big man. Big generalissimo. The chicken man."
Can't believe I never noticed that before.
		
		
	 
Little is known about Gus' past. A 
Chilean national, Gus studied chemistry in the 
Universidad de Santiago de Chile and emigrated to 
Mexico in 1986 during the dictatorship of 
Augusto Pinochet.
[4]^ With his longtime friend and partner, 
Maximino "Max" Arciniega, Gus started a chicken restaurant called Los Pollos Hermanos. Max was murdered by the 
Juárez cartel, leading Gus to emigrate to the United States in 1989, where he re-established Los Pollos Hermanos as a chain of 
fast-food restaurants. Using his restaurants' supply chain as a front, Gus began distributing drugs in the 
American southwest on behalf of the cartel, an operation that eventually grew to encompass 
methamphetamine.
Gus claims to have children, yet they have never been seen and little else about his family life has been revealed. It is implied that Fring may be using an 
alias; neither Hank nor Mike can find any record of his existence before his arrival to Mexico. 
Don Eladio, the cartel's leader, 
mentions that he spares Gus' life only because he knows who Gus is, and warns him that he "isn't in Chile anymore"; in a flashback scene, Hector Salamanca mockingly refers to him as "Grand Generalissimo". Gilligan has stated that he purposely left Gus' origin ambiguous, comparing it to 
the briefcase in Pulp Fiction.
[5] Gus drives a 
Volvo V70, stating that he chose it for its "safety record".