From Wikitroid, the Metroid wiki
The
Phazon Enhancement Device is based on captured
Space Pirate technology. It is being tested by a
GF Marine battalion stationed in the Norion system. Marines can initiate an energy siphon from the supply of
Phazon carried in a backpack into their armor suits. This allows them to temporarily enhance the exoskeleton and weapons systems of their armor suits. To date, no Marines have displayed signs of Phazon
sickness, common in subjects who use the Space Pirate's version of the system. However, in one of the archives describing the PED in the Metroid Prime 3 preview, a PED Marine is seen activating his device in succession. However, at the end of the archive, he is seen trying to move his hand, meaning that the PED Marines' suits can possibly cause a part of their body to go numb for a few moments, as he only shakes it and then moves on with the rest of the Marines.
[1]
A side view of the backpack system used by troopers.
In
Metroid Prime 3: Corruption, Samus Aran and three other bounty hunters, named
Rundas,
Ghor, and
Gandrayda receive Phazon Enhancement Devices, or
PED Suits, after being corrupted by
Dark Samus's attack on
Norion]]. The PED Suit allows Samus to enter Hypermode, but at the cost of one full
Energy Tank. In Hyper Mode, Samus's attacks become more powerful and use up Phazon. If the player depletes his or her Phazon reserves, Hypermode ends. Hypermode also ends automatically after 25 seconds. Hypermode can also be exited automatically at the player's decision, and the remaining Phazon is converted back to health. At some point, the Phazon level will start rising on its own, and if it fills the meter, Samus dies; completely corrupted by Phazon. Expelling the remaining Phazon to end Hypermode is a safe way to avoid death by corruption.
Samus is able keep her corruption under control, but the other bounty hunters who have suffered under Dark Samus's attack turn rogue and attack Samus, leading to boss fights with all three hunters. After all Phazon is destroyed after Dark Samus' final defeat on Phaaze, the Phazon Enhancement Device becomes useless.
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