Dr. Wagner
Manuel González Rivera made his professional wrestling debut on July 16, 1961 under the ring name Centella Negra, in 1962 he adopted the ring name he would become world-famous under, Dr. Wagner. As Dr. Wagner he became one of the top performers in Mexico for a long period of time until he was forced to retire on April 27, 1986 after a car accident. González became the patriarch of a wrestling family that at the time of the show spanned three generations as both his sons became wrestlers as well, the oldest working as Dr. Wagner, Jr., and the youngest wrestling as Silver King / Silver Cain. The third generation "Dinastia Wagner" began wrestling in 2009 as El Hijo de Dr. Wagner made his debut. Manuel González died in 2004. Dr. Wagner, Jr.'s independent promotion "Promociones Wagner" joined up with IWRG in late 2011 to celebrate the 50th Anniversary of Dr. Wagner's debut, a collaboration made possible through Dr. Wagner, Jr.'s employer Lucha Libre AAA World Wide (AAA), who had a solid working relationship with IWRG that allowed the two smaller promotions to collaborate on the event. The show featured a mixture of IWRG, AAA and freelance wrestlers as well as wrestlers who were being trained by Dr. Wagner, Jr., at the time.