Full Name: William Joseph Blazkowicz
Alias: B.J. Blazkowicz
Date of Birth: August 15th, 1911
Occupation: US Army Ranger/ Agent
Division: Kreisau Circle, Former-Office of Secret Actions (O.S.A.)
Height: 6' 4" (76 in)
Weight: 210 lbs (95 kg)
Hair Color: Brown
Eye Color: Blue
Parents: Rip & Zofia Blazkowicz (both deceased)
Spouse: Anya Oliwa
Children: Jessie & Zofia Blazkowicz (twins)
Blazkowicz's first gaming debut. The Nazis have captured the American Spy and locks him in Castle Wolfenstein. He manages to escape and now has to find his way out by traversing through various mazes and tight corridors, killing Nazis in the process. The bosses he fights include Hans Grosse and Adolf Hitler himself.
Now an agent to the Office of Secret Actions (or O.S.A.), Blazkowicz is imprisoned in Castle Wolfenstein yet again and is about to be executed. Luckily, he escapes and is set on a mission to stop Oberführer William "Deathshead" Strasse, Head of the SS Special Projects Division, in creating a group of undead soldiers for world domination.
Still an O.S.A. Agent, Blazkowicz is sent to Isenstadt, a (fictional) city in Germany where the Nazis are mining special stones called the Nachtsonne crystals in order to power the Thule Medallion. When in possession, the wearer of the medallion is able to enter the Veil, a barrier between the real world and a dimension known as the Black Sun, harnessing its powers. Once Blazkowicz gets hold of the medallion, he is able run faster, jump higher, penetrate walls and deflect bullets.
This is the first game in the series where Blazkowicz has a voice and uses special powers to fight enemies besides guns.
Timeline: 1946 - 1960
3 years after the events of the previous game, Blazkowicz suffers a head injury that leaves him in a vegetative state for 14 years in a Polish asylum. In 1960, Blazkowicz awakens from his coma and is shocked to learn that during his absence, the Nazis have ended World War II in victory and have taken over the world. With the help of the asylum nurse and love interest Anya Oliwa, he joins the resistance and continues where he left off.
The storyline follows up on the last events of The New Order where Blazkowicz nearly dies of grenade fragmentation injuries in the final battle but promptly gets evacuated by Anya and the surviving Kreisau resistance members. Blazkowicz spends the next five months in a coma as a result of his grave wounds.
The game also explores his past with the introduction of his father Rip, an Alt-Right salesman, and mother Zofia, a caring housewife. Blazkowicz had a traumatic childhood mostly because of his abusive father who scolded him for befriending with an African American girl, not wanting to kill his dog when instructed, and constantly assaulted his mother. The stress of it all forced young Blazkowicz to run away from home to join the army. Flash forward to the present, Blazkowicz reunites with his father who reveals that he willingly sent Zofia to the Nazis for being Jewish and was executed. Attempting to do the same thing to his son, Blazkowicz kills Rip in defense.
Soon after, he gets captured and is beheaded in public by Freu Engel. Luckily, the resistance is able to preserve his severed head and attached it to a new body.
At the end of the game, Blazkowicz proposes to Anya who is pregnant with twins.
In this spin-off/sequel, an aged Blazkowicz goes missing and it's up to his twin daughters Jessie and Zofia to track him down and rescue him.
It has been implied by id and Apogee Software that Blazkowicz is the grandfather of Apogee character Billy Blaze, aka Commander Keen.