A Phaazoid is a creature made out of Phazon energy, formed when a Leviathan is destroyed. They fire Phazon-based rings at enemies. Phaazoids can only be harmed by Phazon attacks. If hit enough times, Phaazoids will split into two smaller Phaazoids. Destroying a small Phaazoid will cause it to split into two even smaller creatures resembling homing aerial mines. Samus can destroy each with one Hyper Mode shot. Some Phaazoids, when split, will create one normal and one red small Phaazoid. These Red Phaazoids are more aggressive, stronger, and, when destroyed, drop one Gold Credit instead of mines. Unlike other credits, credits dropped by Phaazoids are dropped like any pickup, and must be drawn in and touched before it will register.
Despite the fact that their name begins with "Phaaz-", they are not found on Phaaze, as they are only created when a Leviathan is destroyed. Thus, Phaazoids are only found on Bryyo, Elysia, and the Space Pirate Homeworld after the destruction of the respective planet's Leviathan. It is unknown if they started appearing on Tallon IV and Aether after the destruction of their seeds.
"Phaazoids are masses of Phazon energy that form after a Leviathan has been destroyed. They still retain a small bit of sentience and are mindlessly aggressive. The only way to damage a Phaazoid is by attacking it with Phazon-based attacks. However, this has a side effect of causing the creature to split into two smaller forms. Once the Phaazoid has split small enough, it will simply fly at a target and detonate on contact. It is said that some Phaazoids may split into a rare, crimson-colored form."