Liam Payne.

His name is enough for Harry to see red. The mob boss loathed the brown haired FBI agent. Liam was the leader of Federal Bureau of Investigation, and he had an acrimony for the curly haired mob boss. The two had grown up as best friends. However, their friendship soon turned into a rivalry, which only became stronger and more competitive as they aged.

Eventually, Liam was crowned the FBI's chief agent. Whereas Harry chose a path of drugs and violence. Both very successful in different ways.

No matter how many times Liam attempted to bust Harry for his unlawful acts, he was always two steps behind the cruel man. The FBI agent would have given up if it wasn't for the death of his close friend Josh Devine; the person responsible, Harry Styles.

Liam is out for revenge and will stop at nothing to win. That is hard when the mob boss is ruthless and wouldn't bat an eyelid if three of his employees were killed. However, Harry has one weakness.

His nerdy princess.