Sin Piedad

Sin Piedad (Spanish for "No Mercy" or "No Pity", not to be confused with a similarly-titled series of PPV's hosted by WWE) is the collective name of a series of annual lucha libre, or professional wrestling major show promoted by Mexican professional wrestling promotion Consejo Mundial de Lucha Libre (CMLL).

The very first Sin Piedad event produced under that name took place on December 15, 2000 in Arena México, in Mexico City, replacing their regularly produced Friday night CMLL Super Viernes ("Super Friday") show.

Demus 3:16 has worked under Sin Piedad shows two different ring names, Pequeño Damián 666 and Demus 3:16, while El Sagrado also worked a Sin Piedad show under his previous identity Genético.

In total three wrestlers lost their masks as a result of a Sin Piedad match; Pequeño Black Warrior, Mictlán and Ángel Azteca.

first in 2003 the final for a tournament to determine the next holders of the Mexican National Trios Championship.