The man known as Fang was a notorious member of Imperial Japan's spy network that was active in the United States during World War II. Stationed in San Francisco's Chinatown district, Fang would try to undermine American interests prior to their direct involvement in the war. In 1941, he would receive orders from Baron Nushima to prevent two Chinese emissaries from receiving a war loan from the US government to aid in their efforts to stop the Japanese from invading China. To this end, Fang would send his minions to kidnap Chang and Liang during their stay at Camp Lehigh before they were to appear in Washington D.C.
Fang would accompany his hatchet men, knocking out Private Steve Rogers who was assigned to watch over the emissaries. Fang would have Liang cut down, and Chang captured, as well as Camp Lehigh's mascot James Barnes. He would later also capture government agent Betsy Ross. He would torture Chang, and then before he could execute James, Steve (as Captain America) would rescue them all. Easily beating Fang and his minions into submission. With Fang and his minions defeated, Captain America and Bucky would leave them with Betsy Dean to turn over to the FBI.
In the modern era, the Super-Adaptoid took on Fang's form to confuse Captain America, who had then just recently been revived after decades in suspended animation and was having trouble adjusting to all the time he had lost. According to Captain America, Fang was apparently killed during the bombing of Hiroshima in 1945. If this is true, Fang was likely one of the many souls that contributed to the Everwraith, a being comprised of the souls of those who were killed during the bombings of Hiroshima and Nagasaki.
Despite his feared reputation, Fang appeared to leave the fighting to his subordinates, giving him below average fighting skills.
- Although acting as an agent of Imperial Japan, the Fang surrounded himself with a number of stereotypical Chinese affectations in his choice of headquarters, style of dress, decorations, etc. It is unclear from the story if he was merely posing as a Chinese crime lord, or was an actual leader in a Chinese crime ring (then known as a tong) in the pay of the Japanese government.