The Gelivox Stalker is a large feline predator of Kela's icy drifts and polar shelves, named after the Kelan colony Gelivox. Standing 3 to 4 meters long and weighing 400 to 600 kg, its muted color patterns and light-reactive dermis camouflage it in snow for near invisibility, paired with near-pitch-black vision that allows it to stalk prey unseen for days. Territorial and solitary, it uses forward-curving claws to slash in rush ambushes, following human parties for days and attacking when starvation overcomes patience. The Kelan historically feared it, carving its image into warnings of relentless danger.

The Gelivox Stalker hates Smilohounds with an intensity that defies conditioning. Even when raised together in captivity from birth, the two species cannot coexist. The hostility appears to be innate rather than learned, embedded so deeply in the Stalker's biology that no amount of socialization can override it. This makes the species impossible to keep in any facility or household that also maintains Smilohounds, which is most of them, and limits its domestication to isolated Kelan operations that do not use canid companions.