The Outlaws Motorcycle Club, incorporated as the American Outlaws Association or its acronym, A.O.A., is a one-percenter motorcycle club and alleged organized crime syndicate that was formed in McCook, Illinois in 1935.
El Forastero Motorcycle Club (EFMC) is a one-percenter motorcycle club which was established after being turned down for a chapter by the Satan Slaves MC.
 The El Forasteros are well known for their criminal activities, and are considered by law enforcement to be among the many second-tier, after the "Big Four" gangs, outlaw motorcycle gangs operated as organized crime enterprises.
Ralph Hubert "Sonny" Barger (born October 8, 1938) is an American author and actor, who is a founding member (1957) of the Oakland, California, U.S. chapter of the Hells Angels Motorcycle Club.
 He is the author of five books - "Hell's Angel: The Life and Times of Sonny Barger and the Hell's Angels Motorcycle Club" (2000), "Dead in 5 Heartbeats" (2004), "Freedom: Credos from the Road" (2005), "6 Chambers, 1 Bullet" (2006), and "Let's Ride: Sonny Barger's Guide to Motorcycling" (2010) - and editor of the book "Ridin' High, Livin' Free: Hell-Raising Stories" (2003).
 Onscreen, Barger was identified but didn't speak in "Hells Angels on Wheels" (1967) and was one of several members of the Angels who had speaking parts playing themselves in "Hell's Angels '69" (1969); he has appeared in several additional films.
 He also appeared in the "Sons of Anarchy" television show as "Lenny "The Pimp" Janowitz"
The Breed Motorcycle Club is a one-percenter motorcycle club that was formed 65 miles northeast of Philadelphia in Asbury Park, New Jersey in 1965.
 It was at one time one of the most powerful and feared motorcycle clubs in the Northeastern United States, with a number of chapters in New Jersey and Pennsylvania.
 Although The Breed were founded in the 1960s, the gang did not start to expand rapidly until the early 1980s when members of the Aces and Eights Motorcycle Club, based in Riverside, New Jersey, patched over in 1983.
 In 1986, the Branded Motorcycle Club was absorbed into The Breed.
 The Breed headquarters was moved to Bristol Township, Pennsylvania.
Pagan's Motorcycle Club, or simply The Pagans, is an outlaw, one-percenter motorcycle club and an alleged organized crime syndicate formed by Lou Dobkin in 1959 in Prince George's County, Maryland, United States.
 The club rapidly expanded and by 1965, the Pagans, originally clad in blue denim jackets and riding Triumphs, began to evolve along the lines of the stereotypical one percenter motorcycle club.
The Blue Angels Motorcycle Club (BAMC) is a one-percenter motorcycle club that was formed by Allan Morrison and Billy Gordon in the Maryhill area of Glasgow, Scotland in 1963.
 "Blue" stands for Bastards, Lunatics, Undesireables and Eccentrics but the name also came from other sources; blue is the main colour of the Scotland flag.
 The Blue Angels are one of the largest motorcycle clubs in the United Kingdom, only falling behind the Outlaws, Hells Angels and Satans Slaves.
The Bacchus Motorcycle Club (BMC) is a Canadian one-percenter motorcycle club whose members ride only Harley-Davidson motorcycles.
 The name "Bacchus" is derived from an alternate name for Dionysus, the Greek god of wine, women and song.
 The name of the club originates from the cult and city religions symbolism of Dionysus, who was regarded as the protector or guardian of those who do not belong to conventional society.
Galloping Goose Motorcycle Club (GGMC) is a one-percenter motorcycle club that began around a motorcycle racing team and friends based out of Los Angeles, California in the United States in 1942.
 The group was informal and not chartered until 1946.
 Soon after, the organization spread out from southern California, establishing chapters in Illinois, Missouri, Montana, Indiana, Wyoming, Kansas, Mississippi, Louisiana and Florida.
Sons of Silence Motorcycle Club (SOSMC) is a one-percenter motorcycle club that was founded in Colorado Springs, Colorado in the United States in 1966.
 The first chapter outside Colorado was the Iowa chapter which was founded in 1968.
 There are now American chapters in Arkansas, Colorado, Florida, Idaho, Illinois, Indiana, Kansas, Kentucky, Louisiana, Minnesota, Mississippi, Missouri, North Dakota, South Dakota, Utah and Wyoming.
 The first foreign chapter was founded in Munich, Germany in 1998.
 In 2001, more German chapters were founded in Freising, Gangkofen and Nürnberg.
 In November 2007, a Viernheim chapter was founded.
The Hells Angels Motorcycle Club (HAMC) is a worldwide one-percenter motorcycle club whose members typically ride Harley-Davidson motorcycles.
 The organization is predominantly white male and considered an organized crime syndicate by the United States Department of Justice.
 In the United States and Canada, the Hells Angels are incorporated as the Hells Angels Motorcycle Corporation.
 Common nicknames for the club are the "H.A.", "Red & White", "HAMC" and "81".

Question: Which worldwide one-percenter motorcycle club was Sonny Barger a founding member of in Oakland, California?
Answer: Hells Angels Motorcycle Club (HAMC)