There was like a dog-looking… lightning thing.―Alyx Vance

The Reviver aka Runner aka Lightning Dog ... Headcrab from the game Half-Life Alyx . This STL model is designed specifically for 3D printing. Dynamically posed. Check out our other HLA models! Thanks!

Revivers, are small creatures, akin to but slightly larger than a Headcrab. They have a triple-jawed maw at the front, four claw-like limbs (two either side of the body) and a single, long tail-like tentacle at the rear. Each pair of limbs are connected by a patagium, a thin sheet of tissue similar to that of flying squirrels and sugar gliders. The skin is reminiscent of sharks & other sea creatures, sporting bioluminescent spots on a translucent skin. Finally, a cluster of arthropodal ocelli are present at the end of the tail, allowing for rudimentary sight.

Whilst the Reviver appears superficially related to headcrabs by virtue of its general appearance, form and abilities, the asymmetric mouth, extended tail and unusual pigmentation point to a relatively distant genetic relationship when compared to other similar creatures.

Revivers, also known as Runners and mostly called Lightning Dog by Alyx Vance, are hostile creatures that inhabit the Quarantine Zone in City 17. They spit electrically charged liquid which can cause power failures in electrical equipment, which also deals minor damage to living creatures. Revivers can reanimate and control corpses, turning them into electrified zombies.