As an amateur, he won a gold medal at both the 2011 and 2015 Pan American Games, whilst also competing at the 2016 Olympics.

[1][2] Dainier Peró, also a southpaw who won the Pan Am Games super heavyweight title and unsuccessfully competed at the Olympics, is his younger brother.

[4] After amassing a 3–0 record throughout the rest of 2019, Pero faced Jorge Alejandro Arias for the vacant WBA Fedelatin heavyweight title on 11 December 2020.

[8] Pero faced Geovany Bruzon on 1 January 2022, on the undercard of the Luis Ortiz and Charles Martin pay-per-view bout.

[13] On Feb 12, 2023 he pulled an upset over a previously professionally unbeaten two-time Amateur World Champion Victor Vykhryst with continuous body shots that broke the latter by the 8th round.