Glenn Dale Underwood, age 66 of Denver, Colorado passed away peacefully on July 22, 2024 at his residence in Denver. A family and close friends ceremony will be held at a later day, arrangements to be announced. Glenn was born February 22, 1958 in Denver, CO, the son of Dale and Jean Underwood, grandson of Reverend Norvil and Reverend Margie Underwood of Iowa. He is survived by his wife Tammy Underwood and sister Donna Wilt, Nephew Cody and Amy Wilt and their two children. He is also survived by his father in law Eddie Martinez and mother in law Linda Martinez, and his two sister in laws Monique and Nicole. Two brother in laws Chris and Nick . 4 nephews Jimmy, Christian, Dillon, Chad. Along with numerous nieces and nephews. Glenn retired from from Prestige Imports Porsche Audi after becoming ill. He was an avid Bronco fan, he loved fishing, Rv camping. Glenn was an amateur photographer for several race tracks and enthusiastic racing fan where he acquired the nickname "Underdog" He did not have children of his own but he did do a fundraiser for Colorado Christian Home to help fund their work with children in need. He will be dearly missed by his family and many friends.