Phaz-Ings are wall-crawling, shape-shifting, Phazon-based enemies found in Metroid Prime 3: Corruption. Because the Phaz-Ing's bodies are weak to physical stress, they stay in liquid form as much as possible, shifting to their more vulnerable form only to attack with bursts of Phazon. They are capable of moving over any terrain. They apparently originate on the planet Phaaze and seem to have made way to G.F.S. Valhalla through the Space Pirate invasion on the ship. They seem to be able to survive the ship because of the Phazon present on-board.
While they can be defeated with regular beam weapons, the Grapple Lasso is the most effective weapon against them. They are able to be ripped apart with one pull from the Grapple Lasso while they are not in their liquid Phazon state. Because of their vulnerability to the Grapple Lasso, this enemy shimmers yellow to indicate its weakness. Samus can siphon energy from them with the Grapple Voltage and Hyper Grapple. The creature becomes extremely useful and almost necessary to drain energy using the Hyper Grapple to survive Samus's raising Phazon levels within her body on the planet Phaaze. On the planet, they generally appear in groups.
- Phaz-Ings are extremely similar to Metroid Prime 2: Echoes' Inglets in name and other physical characteristics. A relationship between both species, however, is highly unlikely considering that Inglets appear only on the destroyed Dark Aether. The Phaz-Ing model seems to be based off the Inglet model.
- "Wall-crawling shape-shifter. Vulnerable to physical stress. Phaz-Ing bodies are weak to physical stress and can be easily pulled apart. These morphing blobs of Phazon often prefer to stay in puddle form and will only shift out to attack. Their ability to move over all types of terrain allows them to position themselves at a distance before assaulting with bursts of Phazon Energy." — Logbook "Phaz-Ing" (Metroid Prime 3: Corruption)