[quote=Derpestein]
To be honest, Darth Vader ruled the Empire as second in command for a long while.Pyro has helped kill a giant bread monster, also more than a hundred robots.Nathaniel is a unicorn knight. Nuff said.
[/quote]

The Witch-King destroyed Arnor, he killed King Avaleg I, he was lord of Minas Morgul, he killed King Theoden, he is the leader of the Nazgûl and he is over 2000 years old.