Aquasten is a Water and Earth-type Creo that functions as a living pressure washer.
Aquasten is valued by the few humans who have managed to tame it, since a Creo that can place a precisely aimed jet of water has genuine utility, for example in cleaning outside surfaces. Tamed Aquasten remain far rarer than wild ones.
Biology
Rather than having fingers, Aquasten's hands are designed to shoot out jets of pressurized water. This is no trifling squirt gun encounter: the jets are powerful and precise enough to cut through solid rock. Aquasten can modulate the intensity of its water flow, so it is not always slicing objects with a liquid laser. However, it will use its abilities for defense if it must.
Aquasten's body serves as a water reservoir, and it is unable to draw water directly from precipitation or moisture in the air. What looks like a three-pronged base or foot is actually Aquasten's pipe system. These pipes are not deep enough to mine water from earth as tree roots do.
Once Aquasten's reservoir is full, it lasts for quite some time. It can simultaneously suck air in through its mouth while spraying with its arms, allowing it to aerate the air stream and deliver high pressure without requiring as much volume.
Aquasten necessarily lives alongside major bodies of water. It immerses itself and sucks up however much water it needs. Wild Aquasten usually squirt water for recreation, spending their days in target practice of various sorts.