Ma Huateng

Co-founder of Tencent, China's largest Internet company by market capitalization, is part of a triumvirate of Internet giants that dominate the China market and are known at home by the acronym TAB: Tencent, Alibaba and Baidu. Ma Huateng, however, couldn't be more different from the leaders of the other two. Whereas Jack Ma courts clients for Alibaba in a high-profile way and youthful looking Li turns up in public, Ma is famous for laying low. So far, it doesn't seem to have hurt the company: Tencent is one of the world's 10 most popular websites, according to survey company Alexa, and its Hong Kong-listed shares are up by about a third in the past year. Zhang Zhidong, another co-founder, is also on the billionaires list this year. He was born in 1971 and moved three times in his youth as his father sought work, according to Bloomberg; the elder Ma ultimately landed a job as a port manager.