John D. Carmack is an American computer programmer, engineer, and businessman. He co-founded id Software. Carmack was the lead programmer of the id video games Commander Keen, Wolfenstein 3D, Doom, Quake, Rage and their sequels. Carmack is best known for his innovations in 3D graphics, such as his Carmack's Reverse algorithm for shadow volumes. In August 2013, Carmack took the position of CTO at Oculus VR.
Michael Rubens Bloomberg is an American businessman, engineer, author, politician, and philanthropist. As of February 9, 2018, his net worth was estimated at $50.8 billion, making him the 7th-richest person in the United States and the 10th richest person in the world. He has joined The Giving Pledge, whereby billionaires pledge to give away at least half of their wealth.
Jean Paul Getty was an American-British industrialist. He founded the Getty Oil Company, and in 1957 Fortune magazine named him the richest living American, while the 1966 Guinness Book of Records named him as the world's richest private citizen, worth an estimated $1.2 billion . At his death, he was worth more than $6 billion . A book published in 1996 ranked him as the 67th richest American who ever lived, based on his wealth as a percentage of the gross national product.
Terence Thomas Kevin O'Leary is an Irish Canadian businessman, author and television personality. He co-founded O'Leary Funds and SoftKey. From 2004-14, he appeared on various Canadian television shows, including the business news programmes SqueezePlay and The Lang and O'Leary Exchange, as well as the reality television shows Dragons' Den and Redemption Inc. In 2008, he appeared on Discovery Channel's Project Earth. Since 2009, he has appeared on Shark Tank, the American equivalent of Dragons' Den.