Samus fought and killed it during her mission on Tallon IV, in the Elite Research room of the Phazon Mines. It guarded one of two Chozo Artifacts found in the Mines, the Artifact of Warrior, which Samus needed to open the Impact Crater. Unlike the Elite and Omega Pirates, the Phazon Elite does not wield a Plasma Artillery Cannon, but still has the Energy Siphon used by all Elite Pirates, as well as the Wave Quake Generators. The Phazon Elite appears to be infused with Phazon to a further extent than any other Elite Pirate, with sickly Phazon plates and veins all over its body.
"Phazon Elite, Elite Pirate infused with energized Phazon. The Phazon-charged Elite Pirates rely more on their Wave Quake Generators, opting not to carry the vulnerable Plasma Artillery Cannons normally used by Elites. The direct fusing of Phazon into their bodies provides a tremendous level of energy. The drastically lower life span that comes with this process is of little concern to the Space Pirate Science Team."
Wave Quake Generators from the Phazon Elite are launched faster than the standard Elite Pirates.
A glitch can be utilized when fighting the creature. If the player stands still in a certain area of the chamber where the pirate is fought, it will simply stop attacking and stare at them. This area where the player must stand is roughly near one of the metal support pillars.