Listen, if you ever need anybody murdered, please give me a call. I’m very discrete. I have no code of ethics, I will kill anyone, anywhere!
~ Krombopulos Michael to Morty Smith.

These villains are individuals who are paid money to kill either as part of a government or as a contract from a criminal. Another term is "Hitmen".

Alternatively, an assassin refers to anyone who is involved in the crime of assassination: the attempted murder of those in a position of power.

For Characters which are also Ninjas, use Ninja instead of Assassin. Do not tag pages with both.