Walsh

Sampson is an agent of Japami. He was killed by the Shadow in 2001.

Investigating James E. Gilbert and K. Ferr's Assassinations
In the morning following James E. Gilbert and K. Ferr's assassinations Sampson and Walsh are sent by Tsuchida Daisuke to investigate and conclude that an assassination took place.

Investigating Robert Lee
After Ian Johnson and Dylan Bowen's deaths Walsh goes to the crime scene but the police chief asks him where Sampson is, to which he responds, he was killed defending a senator called Riggs from a terrorist. After investigating for a while Walsh calls his boss and leaves.

Death
After the massacre at Erick Garrison's mansion Walsh hears about it and tries to contact his boss but the Shadow stops in the road and asks him for directions. After Walsh gives the Shadow directions the Shadow shoots him with a silencer pistol and drives off.