Pentagón Jr. is a Mexican luchador enmascarado signed to All Elite Wrestling (AEW) under the ring name Penta El Zero Miedo. He is a former AEW World Trios Champion with his Death Triangle stablemates Pac and his real-life younger brother, Rey Fénix. Penta and Fénix also team as the Lucha Brothers and are former one-time AEW World Tag Team Champions. They also appear for AEW's sister promotion, Ring of Honor (ROH), where they are former ROH World Tag Team Champions. He also appears in Lucha Libre AAA Worldwide (AAA), where he is a former AAA World Tag Team Champion, also with Fénix.

Lucha libre is the term for the style of professional wrestling originating in Mexico. Since its introduction to Mexico in the early 20th century, it has developed into a unique form of the genre, characterized by colorful masks, rapid sequences of holds and maneuvers, and "high-flying" maneuvers, some of which have been adopted in the United States, Japan, and elsewhere. The wearing of masks has developed special significance, and matches are sometimes contested in which the loser must permanently remove his mask, which is a wager with a high degree of weight attached. Tag team wrestling is especially prevalent in lucha libre, particularly matches with three-member teams, called trios.