Caio Henrique, also known by the aliases "Ceifador" and "Ceifeiro," is a notorious figure in the annals of Brazilian crime, often described as a serial killer, mass killer, spree killer, family annihilator, vigilante, cannibal, arsonist, torturer, etc. His actions have left an indelible mark on the cities of Rio de Janeiro, Guapimirim, Magé, Niterói, Vale, etc, where his crimes have caused widespread shock and terror. His modus operandi is characterized by indiscriminate killings, as well as targeted assassinations of police officers, militias, and other criminals, etc. Since 2021, he has been implicated in the deaths of 200 to 400 victims, a number that underscores the scale and brutality of his criminal activities.