| "I once thought I could save the world... now look at it"
— Spoilers for Deus Ex: Mankind Divided follow!
After Eliza Cassan's program split during Panchaea's destruction, Picus CEO Everett attempts to prevent the fractured part of Eliza from becoming powerful and freeing herself from any sort of control. To prevent this, Everett hires Walker, along with additional mercenaries, to track down a disk containing backup memories of an older Eliza program and sought after by the fractured Eliza in order to assemble herself and grow in sophistication.
As he knows Adam Jensen is after a disk reader, Walker heads to the only store that carries such a reader, Future-Past Antiký, before incapacitating the store clerk there and leaving him strapped to a bomb in the basement. He then poses as the store clerk when Jensen comes looking for the reader. However, Walker is not very good at his role, as he incorrectly refers to the store as "Future-Last."
Walker was informed by an unnamed source from Picus that he was the only one clever enough to complete the mission and the only one Everett could trust. In reality, Everett does not appreciate Walker prying into the mission (where he learned about Helle) and his lack of discretion. As a result, the source from Picus orders the mercenaries to kill Walker once the disk has been retrieved.
- If Walker is convinced to walk away from his mission, he will later show up in the basement of Svobody Beer. It is unclear why he does not simply disappear from the game after the side mission is complete.
- ↑ Walker is listed as "Walker the Hitman" in the voice actor credits