Origin
El Siniestro de la Muerte is a member of the Disciples of Death, mysterious luchador wrestlers who seem obsessed with death. Assembled by Catrina to act as enforcers and henchman for Mil Muerte, they prowl and participate in Lucha Underground fighting scene. Originally Catrina and Mil Muerte operated by themselves. However after Catrina seemed to doubt Mil Muerte’s abilities, after losses to Fenix, and Catrina assisting Fenix, the two would separate. It would be a ruse however, with Catrina looking to increase the power of Mil Muerte and after a brief disappearance by both, they would return stronger than ever, this time with three new wrestling talents, Barrio Negro, El Siniestro de la Muerte and Trece.
The trio of death obsessed lucha, would target and attack at Catrina’s command, and the Trios Champions Son of Havoc, Ivelisse, and Angelico would count among their victims. At one point, the Disciples of Death would challenge the dysfunctional bunch and win the titles off them. This would mirror the success Mil Muerto would continue to have.
Creation
El Siniestro de la Muerte is created by El Rey Network, for use in Lucha Underground. El Siniestro de la Muerte would also appear in the Lucha Underground comics, first appearing in Lucha Underground – Peace Keeper, appearing as the focal point in the following issue, The Throne.