The first character to use the codename is a man whose real name is Eugene Milton Judd. He was born in 1914 in Saskatoon, Saskatchewan. He spent years travelling the world as a soldier of fortune. His superhero origin began when he was hired to steal the Black Blade of Baghdad. The Blade was actually a prison for an ancient sorcerer called Black Raazer, and Judd accidentally freed him.
Judd was able to trap Raazer once more using some ancient mysticism and the light from his own life force. However, this caused the 7' tall adventurer to shrink to about 3' 6" in height. It has also granted him immortality. At some point, he became friends with the American playboy Dan Kane, otherwise known as Captain Terror. When Captain Terror was defeated in the Spanish Civil War by the 1930s El Aguila, a fellow hero fighting on the opposite side, he retired, but Puck fought El Aguila for revenge.  Eventually joining Alpha Flight, he adopted the codename 'Puck.'
During his time with Alpha Flight, he encountered a new city deep in the Arctic circle. There his team and the X-Men discovered a mystical wellspring. Several humans associated with the X-Men gained vast powers via the wellspring. Puck was cured of his dwarfism and now had trouble walking because his center of balance was off. Later, he learned that the powers came at a price too high to bear, such as the loss of all creativity among all affected and the deaths of all mystics, which included Puck's friend Shaman. The trickster god Loki was behind all this and eventually was persuaded to remove all affects of the well, which unfortunately included Puck's new height. A thought balloon indicated that the pain associated with his dwarfism was now worse then ever.
Later, during the events of the Infinity War, Puck was brainwashed and taken by the cosmic powered villian the Goddess. He was paired up with the affected Spider-Man when an invasion force of superheros planned to attack the Goddess' fortress. This specific pairing was to teach Spider-Man brutallity in the face of his 'former' friends. Puck is swiftly taken out of the fight, defeated by Firestar. Due to the affects of the resulting clash, all brainwashed heros were later freed.
Puck would be brainwashed again by members of his own goverment, who desired to have an Alpha Flight completely under their control.
Along with Major Mapleleaf, Puck II, Vindicator, and Shaman, Puck was among the Alpha Flight members to be killed by The Collective in New Avengers #16. Only Sasquatch was confirmed to survive.