The biggest and most well-known motorcycle club in the world is the Hells Angels Motorcycle Club (HAMC). The Hells Angels have a global presence and chapters in numerous countries. They are recognized as one of the most influential and notorious motorcycle clubs. The club was founded in 1948 in California, United States, and has since expanded internationally. The Hells Angels have been the subject of much media attention, both positive and negative, and have been involved in various activities ranging from motorcycle riding and events to organized crime in some instances. It's important to note that motorcycle clubs vary greatly in size, influence, and activities, and there are many other significant motorcycle clubs worldwide.