Dr. Walter Langkowski is a member of Alpha Flight, a native of Vancouver, British Columbia, Canada of Polish Jewish origin and a renowned physicist, and a professor of both physics and biophysics at McGill University. He is also a former football player for the Green Bay Packers. He possesses the ability to transform into a super-strong, orange-haired beast resembling the legendary Sasquatch. This transformation is triggered by willpower. In his transformed state, Langkowski has increased strength, stamina, and resistance to injury. He also has sharp claws and is able to leap incredible distances.
These powers were a result of Langkowski's self-experimentation with gamma radiation. In an attempt to become like the Hulk, Langkowski bombarded himself with a gamma ray projector at his laboratory near the Arctic Circle. As a proposed explanation for why he transformed into an orange instead of green behemoth (as gamma-irradiated persons are usually affected), Langkowski assumed it had something to do with the Aurora Borealis.
However, unknown to Langkowski, it was not the gamma rays that turned him into Sasquatch, but the fact that his lab equipment opened a doorway between our world and the "Realm of Great Beasts." When this portal was opened, a mystical beast called Tanaraq invaded Langkowski's body and granted him his powers. Langkowski had to learn to mainta
As a member of the Canadian superhero team Alpha Flight, Sasquatch battled the X-Men in an attempt to capture Wolverine. He later battled the Hulk, and then, alongside the Hulk, battled the Wendigo.in his own personality and intelligence when in the form of Sasquatch, and was very successful for a time.
During the Fear Itself storyline, Sasquatch was seen helping Alpha Flight fight Attuma (in the form of Nerkodd: Breaker of Oceans) while saving people from the flood caused by Nerkodd. Once Nerkodd is defeated and repelled, Alpha Flight returns to their headquarters, only to end up betrayed by Gary Cody and his newly-elected Unity Party. When in the custody of the Unity Party, Sasquatch's gamma energy is drained enough for him to revert to his human form of Walter Langkowski. At Parliament Hill, Walter is informed by Agent Jeff Brown that the concussions he had when he played football will cause him to act less human when he changes back into Sasquatch. Jeff also tells Walter that he will soon achieve Unity. Walter is later freed by Shaman who knocks out Agent Jeff Brown.
Sasquatch was seen with Alpha Flight when they come to the aid of Red Hulk when the Mayan Gods appear on Earth. Alpha Flight helps Red Hulk fight them with one of the battles putting Aurora, Sasquatch, and Snowbird in a coma