Voldemort

That guy with no nose who is the main antagonist in Harry Potter.
He killed Harry Potter's parents using the AVADA KADAVA spell but couldn't kill baby Harry, leaving a lightning scar on his head instead.
He is evil and tries to kill Harry Potter with the help of his death eater wizards during the Harry Potter movies/books.
However at the end of Deathly Hallows, Harry kills him and makes everyone happy.

Person 1: Why is Voldemort so evil?
Person 2: Maybe it's because he has no nose, IDK...