- "You got it, J.F.! Make me look bad with the boss, will ya? Well we'll see about that!""
- ―Sansmark's only spoken line[src]
- Main article: BioShock Infinite
Sansmark was first found dead in the lobby of the Good Time Club. Hanging from the club's sign, Sansmark was made an example of for failing Fink as his Head of Security. Sometime later, when Elizabeth and Booker DeWitt entered a Tear to find Chen Lin alive in a different Columbia, they're ambushed by Soldiers, and Elizabeth is shocked to find they're led by Sansmark, who appears shifting between Tears because of being both alive and dead. Like others suffering from Tear Sickness he is bleeding from the nose or ears, but he behaves normally. From an interrogation film and a new Kinetoscope, they find that Chen Lin was only alive in this Columbia because he married Sansmark's sister, Sarah.
When entering the restaurant/entertainment hall (where Fink sends three waves of soldiers and machines after you), he is the final soldier to appear in the second Columbia. He has a few unique lines, but lacks any special weapons or strategies and attacks like any other soldier before being killed by Booker DeWitt. Elizabeth notes when he is killed that he was the dead man in the lobby of the first Columbia's Good Time Club.
As Booker and Elizabeth exit the Good Time Club in the second Columbia, they may note that the marquee over the club, which previously read "BOOKER DEWITT AUDITION TODAY!" now read "SANSMARK RETIREMENT GALA" indicating that he was about to retire from Fink Manufacturing.