New Delhi: Luis Alfredo Garavito Cubillos, aka “The Beast” or “Tribilin” (Latin American Spanish translation of the Disney “Goofy”) is Colombia's rapist and serial murderer.

Garavito is thought to be the worst serial killer in the world, as in a relatively short period of time between 1992 and 1998, he took the lives of 172 children, with the youngest being just 6 years old.

Garavito would find his victims – mostly street kids or peasant children – and make friends with them by giving them a small amount of cash or small gifts.

He would take his new made friends for a walk away from prying eyes and brutally rape them before cutting their throats, torturing and dismembering them.