Brian Cosky is a member of Team Anti-Yo and hails from Millbury, Massachusetts. He has been yo-yoing since 2003 and has progressed quickly. His interest includes yo-yoing, snowboarding, skateboarding, Volkswagens, and drawing. He also was one of the players on the New School 101 video, and was also a member of the Millbury Crew. He placed 5th at the World Yo-yo Contest 2006 and 7th at Nationals that same year. He created a clip video dedicated to Yuuki Spencer known as "Yuuki = God."
It has been said that the Anti-Yo Buzine$$ yo-yo is his signature yo-yo.