Gutierrez akaita kutanga kwake muMexico musi waApril 30, 1989, paakanga ava nemakore 14. Akadzidziswa nasekuru vake Rey Misterio Sr. uye akarwa kare muMexico kwaakadzidza Lucha Libre yakakwira kubhururuka maitiro anga ari mucherechedzo wake. Aive nemazita erin'i akadai sa "La Lagartija Verde (The Green Lizard) " uye "Colibrí (Humming bird) " sekunge sekuru vake vasati vamupa zita rekuti Rey Misterio Jr. Muna 1991, Mysterio akapihwa "Most Improved Wrestler" muMexico achirwa saColibrí. Mubvunzo: Mister Rey Misterio Jr. aive nemakore mangani paakatanga kuita wrestling muLucha Libre?
aiva nemakore 14