Yaaxil

Pishtaco is a mythological boogeyman figure in the Andes region of South America, particularly in Peru and Bolivia. Some parts of the Andes refer to the pishtaco as kharisiri, or ñakaq, or lik'ichiri in the Aymara language.

Biography
Lara Croft saw some creatures killing Trinity soldier in the Peruvian jungle. She described them to Abby as fast and making hissing sounds, Abby though Lara was joking, as she described the legend of Pishtaco. Lara was however certain on what she saw.