Alexei Stukov (also spelled Alexi Stukov) is a human from Earth. He was a vice admiral in the United Earth Directorate (UED). As a human, Stukov enjoyed smoking and vodka, and in infested form, sometimes missed the latter. He speaks with a Russian accent. As a child, he enjoyed horror stories. As an infested terran under Kaloth, Stukov appeared to embrace his position to a degree. After his initial de-infestation and the subsequent return of the condition, Stukov displayed a more fatalistic outlook on his position, believing that he had no place other than in the Swarm, as no-one would accept what he had become.