"Modifications of Stukov second only to modifications of Primal Queen of Blades. However, Stukov product of specific design. Interweaving of terran and zerg matter, subtle. Spun on micro scale not possible for Swarm."
- Abathur

Alexei Stukov (also spelled Alexi Stukov) is a human from Earth. He was the vice admiral of the UED Expeditionary Fleet and tactical advisor to Admiral Gerard DuGalle.

Joining The Swarm
With Narud dead and the lab destroyed, Stukov had achieved his vengeance. He'd assumed that Kerrigan would kill him once the battle was over, but she was willing to let him go his own way. As Stukov pointed out though, there was nowhere he could go, given his status as an infested terran. Kerrigan offered him a place in the Swarm until he made up his mind, which he accepted.

As the leviathan prepared to leave however, Stukov could see that something was wrong. Kerrigan revealed that through her battle with Narud, she'd discovered that Amon had indeed been resurrected, only she did not know where he was. She would take the Swarm to face him, but only after tying up some remaining loose ends in the Koprulu sector.