William O'Leary

William "Billy" O'Leary (born October 19, 1957) is an American actor. O'Leary received a degree in acting from Illinois State University and in 1982 received an MFA from the University of Washington, Seattle's Professional Actor Training Program. O'Leary made his Broadway debut in 1986 alongside Ed Harris and Judith Ivey as Art in Precious Sons at the Longacre Theatre. He played Marty Taylor, the younger brother of Tim Taylor (Tim Allen), on Home Improvement, and was the primary antagonist, General Xaviax, on Kamen Rider: Dragon Knight.