Guerrera first gained American exposure in Extreme Championship Wrestling alongside fellow luchadores Rey Misterio Jr., Psicosis, Konnan and La Parka, all of whom were also wrestling for Konnan's Promo Azteca in Mexico at the time. He debuted in ECW at Big Apple Blizzard Blast in February 1996. When Konnan left for WCW later that year, Guerrera and the rest followed.
