Corporal Daniel Fletcheur is the silent main protagonist of Half-Life: Alpha Unit.

Fletcheur was part of the HECU sent in to Black Mesa to silence the facility. Early on when they had first arrived, he encounters Gordon Freeman in a clash. He was gravely injured, but survived. Before the nuking of Black Mesa, the U.S. government assigned Fletcheur to the Alpha Unit, an HECU squad sent back to Black Mesa to acquire data from the Anomalous Materials laboratory.