William "B.J." Blazkowicz

B.J. Blazkowicz
Wolfenstein character
B.J. Blazkowicz in Wolfenstein (2009)
First game	Wolfenstein 3D (1992)
Created by	Tom Hall / id Software
Voiced by	English Matthew Kaminsky (2001) Peter Jessop (2009) Brian Bloom (2014–present) Debi Derryberry (young B.J., 2017) Japanese Joji Nakata (2014-present)
Motion capture	Brian Bloom

William Joseph "B.J." Blazkowicz (Polish pronunciation: [blasˈkɔvitʂ]) is a fictional character, the protagonist of the Wolfenstein series of alternate history video games starting with 1992's Wolfenstein 3D. An American spy of Polish and Jewish descent, he specializes in one-man missions behind enemy lines. In addition to fighting the regular German army he also frequently encounters bizarre Nazi experiments concerning biomechanical technology and the occult.

Blazkowicz was born in August 1911 in the United States to Polish-American father Rip Blazkowicz and Jewish American mother Zofia Blazkowicz, and grew up near Mesquite, Texas. During World War II, B.J. became a sergeant in the U.S. Army Rangers, before receiving his commanding officer's commission and being recruited as the top agent for the United States Office of Secret Actions (OSA), a fictional version of the Office of Strategic Services, who dispatched him to investigate rumors of occult activity by the Third Reich's SS Paranormal Division (inspired by the real-world Ahnenerbe institute and the Thule Society).

The original timeline states that after World War II, he eventually reared a son named Arthur, who came to have his own son who is the namesake of his grandfather. He would eventually star under a pseudonym, Billy Blaze, throughout the entire Commander Keen series. Billy Blaze later became the father of Doomguy, protagonist of the Doom series.