John Carmack is a renowned computer programmer and video game developer, best known for co-founding id Software. He played a pivotal role in creating groundbreaking games like Doom and Quake, which helped shape the first-person shooter genre. His innovative work in graphics technology has influenced many aspects of game development. In addition to his contributions to gaming, Carmack is also recognized for his work in virtual reality. He served as the CTO of Oculus VR, where he focused on advancing VR technology. His passion for programming and technology has made him a prominent figure in the gaming and tech communities.