Logic Puzzles!

Pizza Parlour Robbery

Secret Agents were called to the Pizza parlour after a penguin standing in the Plaza reported a robbery. He said " I saw 5 different penguins all enter the Pizza Parlour since it opened to when the Chef came out telling me that he had been robbed". The Secret Agents now knew that one of these 5 penguins were involved with the robbery. They asked the penguin standing in the Plaza to describe them and eventually they tracked them all down. They were taken to questioning but no-one was going to admit to it. Here is what they said:

Boofle42:
It wasn't Toystory522.
It was Pinky2000.

Pinky2000:
It wasn't Iceypenguin1.
It wasn't Toystory52.

Iceypenguin1:
It was Toystory52.
It wasn't Boofle42.

Firefighter80:
It was Iceypenguin1.
It was Pinky2000.

Toystory522:
It was Firefighter80.
It wasn't Boofle42.

All the Secret Agents know is that each of the suspects told 1 lie each. Who stole the pizza?