In Pics | Meet the 6 members of the $100 billion clubWarren Buffett on Thursday joined the $100 billion club, joining Jeff Bezos, Elon Musk, and his friend Bill Gates on a highly-exclusive list of just 6 people with a net worth of at least $100 billion.Here's everyone who is a member of the $100 billion club. Data sourced from Bloomberg Billionaires Index.