- "This man, and he does fit the state's current definition of "man," willfully murdered 32 human beings in cold blood."
- ―Prosecuting Attorney[src]
The Massacre of the Hub City National Socialists Club was a mass killing of thirty-two people by G.I. Robot upon his discovery that Sam Fitzgibbon had taken him to a meeting of a Nazi organization.
Background[]

G.I. Robot is presented upon his creation
- "Where are we going, sir?"
"Ah, nowhere special. Just meeting up with some boys, who are all interested in a better country, just like me and you." - ―G.I. Robot and Sam Fitzgibbon[src]
In 1943, the United States Armed Forces created G.I. Robot as a one-track-minded robot set on killing members of the Nazi Party. The robot served alongside Easy Company, which readily embraced him. G.I. Robot bonded with the squadron and came to view them as friends, although was sent back to the United States following the end of the war in Europe. The military tried to have G.I. Robot make public appearances, although it became evident that G.I. Robot was not suited for them, so General King decided to allow Will Magnus to experiment with him.

G.I. Robot is studied by Will Magnus
Magnus studied G.I. Robot in hopes of making another line of automatons similar to G.I. Robot, hoping to prove that G.I. Robot was self-aware. Once Magnus was done with G.I. Robot, the robot was passed around between various laboratories to be studied from until the 1990s, when the United States government eventually abandoned him. G.I. Robot was sold between collectors, ending up with Sam Fitzgibbon, a member of the Hub City National Socialists Club, a neo-Nazi organization centered in Hub City.

G.I. Robot bonds with Sam Fitzgibbon
Fitzgibbon activated G.I. Robot and bonded with him, showing G.I. Robot the rest of his World War II memorabilia. Eventually, Fitzgibbon believed that G.I. Robot would be a help to the National Socialists Club and decided to bring him to their meeting. G.I. Robot came to suspect that there were Nazis at the meeting due to the various dogwhistles tattooed on the organization's members. His fears were confirmed when Billy started the meeting, revealing the Nazi flag behind him.[1]
Massacre[]

G.I. Robot kills the Nazis
- "Get ready to die, Nazis!"
- ―G.I. Robot to the Hub City National Socialists Club[src]
G.I. Robot stood up and aimed his gun at his former friend, Sam Fitzgibbon. He declared that the Nazis present would die and shot Fitzgibbon, killing him and causing a panic in the building. G.I. Robot continued shooting the various members present and people tried to leave. He saw several people trying to run out of the building and turned around, laughing as he shot the people. G.I. Robot began shooting at Billy, who took cover behind his podium. Billy pled for his life as G.I. Robot shot him, killing him.[1]
Aftermath[]

G.I. Robot is arrested
G.I. Robot was arrested and his mug shot was taken. He was put on trial, where he was referred to as a cold-blooded killer. The jury found him guilty, and he was sentenced to be arrested in the Belle Reve Correctional Center's non-human division. He sat in his cell until he was rusted and covered in cobwebs,[1] and eventually began interacting with other prisoners.
G.I. Robot was recruited to join Task Force M to defend Princess Ilana Rostovic from Circe's invasion into her country. He bonded with another member of the task force, Nina Mazursky, happy to have a friend with whom to kill Nazis.[2] G.I. Robot reflected on his time with Fitzgibbon and the massacre while defending Poko Castle from the Sons of Themyscira, happy to be killing them as Rick Flag, Sr. told him the Sons were Nazis. However, G.I. Robot was killed by a burst of magic from Circe.[1]