The wandering circus clown sniper is

The Joker Sniper is Chris Kyle, Christopher Scott Kyle.

Also known as Chris Kyle, he was born in Odessa, Texas, USA. He is an American soldier and former captain of the U.S. Navy SEALs. His retired rank is Navy Sergeant Major III and he has won 2 Silver Stars. Medal and 5 Bronze Star Medals.

Unofficial records indicate that he shot and killed 255 enemy soldiers during this period. The official record provided by the Pentagon is 160. The furthest sniper range reached 1,920 meters, setting a record for the number of confirmed snipers in the history of the US military. The tallest, surpassing Adelbert F. Waldron III, is considered the deadliest sniper in U.S. military history. Retired from the army in 2009.