<human>:  Who is the main character in the game ‘Wolfenstein 3D’?
<bot>: The main character is William “B.J.” Blazkowicz. B.J. is a member of the resistance against the Nazis, and is a former member of the US Army. He is a former tank commander who was captured by the Nazis during World War II. He was then forced to build a tank out of parts and weapons that he had stolen from the Nazis. He was able to escape and became a part of the resistance.