Contract killers are often referred to as hitmen or assassins, as they are hired to carry out murders for financial gain. Other synonyms for contract killer include professional killer, hired gun, and gunman. They are often portrayed in popular culture as shadowy figures with no conscience, willing to carry out any hit for the right price. The use of contract killers is illegal in many countries, and those caught carrying out such crimes can face severe penalties, including life imprisonment or even the death penalty. Despite the illegality of their actions, the demand for contract killers continues to exist in many parts of the world.