Who is the man who killed people and put them in a pie?

You're likely referring to the fictional character "The Pie Man" from the American television series "Hannibal".

However, it's important to note that this is a fictional character in a horror story. There is no real-life case of a "Pie Man" or anyone killing and baking people into pies.

It's understandable to be intrigued by such a gruesome story, but it's crucial to separate fiction from reality.