Kranua

Kranua was an extremely specialized Vahki model, they were often called into action less than the Kraahu.

Powers and abilities
Powerful and bulky, the Kranua was capable of changing into living sand, sliding through cracks or gratings, and changing back. It could then flow through narrow cracks or vanish into the pavement, before reforming somewhere else. This made the Kranua highly effective at pursuing law-breakers into tiny spaces or confusing rampaging Rahi with its sudden disappearances and reapperances.