Alpha Flight is a superhero team from Marvel Comics, first appearing in 1979. The group is primarily composed of Canadian heroes, including Guardian, Sasquatch, and Northstar. They were created to protect Canada and its interests, often facing threats that are unique to the region. The team has undergone various changes in its lineup and story arcs over the years. Alpha Flight has been involved in numerous crossover events with other Marvel characters and teams, showcasing their abilities and commitment to justice. Their stories often explore themes of identity, nationalism, and teamwork.