Employed by McCandless as the group's "sensor", he treked with the party out from Mocsin and into the Darks in search of treasure. Prior to his death, he "smelled" death ahead. When the party reached the cliffs in the Darks protected by the Cerberus cloud a fight erupted between the party members. Reacher took at least three bullets before falling over the cliff. It is assumed he did not survive the fall.
Akin to doomies, he could "smell/sense" things. No outwardly visible mutations.