He's a pachuco, from that marginalized generation of Mexican-American youths who sported zoot suits and developed their own gangster culture in the 1940s.
From the denverpost.com
Into this morass of depraved and generally likable souls comes Graciela, a teenage Mexican illegal who was knocked up and left high and dry by her pachuco boyfriend.
From the suntimes.com
More examples
A Mexican-American teenager who belongs to a neighborhood gang and who dresses in showy clothes
Pachuco refers to a particular old school subculture of Chicanos and Mexican-Americans associated with zoot suits, street gangs, nightlife, and flamboyant public behavior...
"Pachuco" is a cover originally released by Maldita Vecindad in 1991, the first and only single from Kumbia Kings album Kumbia Kings Live released on March, 2006.
A Mexican-American, especially a juvenile delinquent in the Los Angeles area
Young Mexican living in the US
An iconic figure, a "ruffian and a hustler... an antihero", especially important in the culture surrounding the Zona de tolerancia^[1]