Along with Gabe Newell, who co-founded Valve?

Mike Harrington is the co-founder of Valve along with Gabe Newell. Together, they established the company in 1996. Harrington played a crucial role in the early development of Valve, particularly in business and marketing aspects. His expertise and contributions helped shape the company's direction and success. With his business acumen and partnership with Gabe Newell, Harrington played a vital role in co-founding Valve alongside Gabe Newell.