[3] In 1999 the tag team began working regularly for International Wrestling Revolution Group (IWRG) based in Naucalpan, Mexico State.
The original Cerebro Negro only worked under that name for such a brief period of time that it was not obvious that the man beneath the mask had changed.
On November 3, 2005 Cerebro Negro competed in the 2005 El Castillo del Terror show's main event, a steel cage match where the last man in the ring would be forced to unmask .
Following the loss he had to show his face, announced his real name, age and in-ring experience as dictated by the Lucha libre traditions.
[9] Two weeks after his mask loss Cerebro Negro outlasted 29 other competitors to win the IWRG Rey del Ring tournament.
Later on he, Dr. Cerebro and Eterno would compete in a tournament for the newly created AAA World Trios Championship, but lost in the first round to Los Bizarros (Charly Manson, Cibernético and Billy el Malo).
Instead of a wrestling tournament the Rey del Raquetazo saw two competitors take turns Chopping each other in the chest, gaging the fans reaction to the impact.
On April 20, 2016 Cerebro Negro defeated Mike Segura to win the vacant IWRG Intercontinental Welterweight Championship for the sixth time.