Pentagon Jr. Debuted in AAA in 2011 as the nemesis of Fénix. In 2013 took the gimmick of Pentagon Jr. In 2015 he debuted in Lucha Underground as a vicious rudo who after defeating his opponents would use an armbar to break an arm. He was being guided by a mysterious master/maestro who encouraged him in his evil ways. His mantra is Cero Miedo which translates to zero fear. This means he has no fear of anyone or anything. He fights with no fear and he has no problem hurting anyone who gets in his way. Cero Miedo drives him to be as aggressive as possible to reach his goals. Cero Miedo is not just a phrase, its a way of life.