Tom Thacker

Thomas William Arnold Thacker, known by his stage name Brown Tom, is a Canadian musician, songwriter, singer, and record producer. He is the lead guitarist, lead singer and co-founder of the punk rock group Gob, as well as the former co-lead guitarist, keyboardist, and backing vocalist for Sum 41. Thacker formed Gob with Theo Goutzinakis in 1993. Following Dave Baksh's departure from Sum 41 on May 11, 2006, Thacker was recruited as their touring guitarist, and then became an official member in 2009. He had remained with Sum 41 ever since, up until the group's disbandment in 2025.