Power Rings
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Real Identity: Not Applicable
Appearances (STAS): In Brightest Day
Appearances (BB): The Call Part One and Part Two
Appearances (JL/U): Secret Origins Part Two, Part Three, In Blackest Night Part One, Part Two, Enemy Below Part One, Part Two, Injustice For All Part One, Part Two, War World Part One, Part Two, Brave and the Bold Part One, Part Two, Fury Part One, Part Two, Legends Part One, Part Two, Metamorphosis Part One, Part Two, Savage Time Part One, Part Two, Part Three, Tabula Rasa Part One, Part Two, Only a Dream Part One, Part Two, Maid of Honor Part Two, Hearts and Minds Part One, Part Two, A Better World Part One, Part Two, Eclipsed Part One, Part Two, Secret Society Part One, Part Two, Hereafter Part One, Part Two, Wild Cards Part One, Part Two, Comfort and Joy, Starcrossed Part One, Part Two, Part Three, Initiation, Kid's Stuff, the Return, Greatest Story Never Told, Dark Heart, Wake the Dead, Once and Future Thing Part One, Part Two, Doomsday Sanction, Task Force X, Clash, Hunter's Moon, Panic in the Sky, Divided We Fall, Shadow of the Hawk, Chaos at the Earth's Core, To Another Shore, Flash and Substance, Patriot Act, the Great Brain Robbery,Far From Home, Ancient History, Alive! and Destroyer
Appearances (SS): A League of Their Own Part One, Part Two, and Fallen Hero
Appearances (JLI Comics): The Mirror Crack'd, The Mirror Crack'd Part Two, The Mirror Crack'd Part Three, The Mirror Crack'd Part Four, The Mirror Crack'd Part Five, The Mirror Crack'd Part Six, and The Mirror Crack'd Part Seven
Powers/Skills: Flight, Force Field Generation, Scanning, Omnilingualism, Communication, and Energy Constructs
Voiced By: Not Applicable
The power rings of the Green Lantern Corps are considered to be the most powerful weapon in the universe. A thousand years ago, the Guardians of the Universe forged this technology in their campaign to police the known 3600 space sectors. Those who are chosen to wield a ring are usually at the scrutiny of the Guardians. The power of the rings are limited only by the willpower of its user. According to Katma Tui, true mastery of the ring requires subtlety of manipulation and control, an always cognizant mental discipline. This willpower is most important in the generation of electromagnetic solid light constructs that act as defensive and offensive measures of the Green Lantern.
In addition, the rings provide its user's flight, personal force fields, uniforms, energy scanning, language translation, recorders, storage, and communication. It also follows voice commands and can be summoned remotely. These features lead many to conclude that the ring is an advanced miniature computer. As a failsafe, when a Green Lantern is killed in action, the ring automatically seeks out a successor.
Despite its omnipotence, the rings have its share of weaknesses. The power rings can hold a full charge for 24 hours then must be recharged by a Green Lantern's personal battery. After inserting the ring into the battery, the Green Lantern counts the time needed for a full charge by reciting the Green Lantern Oath. The battery resembles a lantern and is connected to the Central Battery located at headquarters on planet Oa. Alternatively, pure electromagnetism can charge as ring. This was evidenced when Static applied his powers to charge John Stewart's drained ring. As a safeguard, the Guardians also made sure the rings had a flaw built in to each ring, they are unable to directly affect the color yellow. This ultimately prevented any one Green Lantern from becoming too powerful and to stretch their range of imagination in hostile situations. Since the ring is dependant on the user's willpower, telepathic attacks on the user can render the ring useless. A construct like a bubble could only stand up to Anti-Life for so long before the ring ran out of power or the user ran out of willpower. The vibrational force of the Speed Force aided in keeping the construct intact for a while longer.
Alternative to the Green Power Ring, Sinestro bears a Yellow Power Ring and Star Sapphire, the Sapphire Gem, both of unknown origin but equal potency. The energy of a Green Power and Yellow Power Ring can be transferred between each other, as evidenced when Sinestro stole John Stewart's Green Lantern Battery. In one parallel Earth, the Green Guardsman bears a Green Power Ring but its weakness differs in that it can't affect anything aluminum. Lex Luthor's Power Disrupter proved able to sever the mental link between the Justice Lord Green Lantern and his power ring, making it useless. As long as it runs a constant stream of energy, the ring can also power a Transdimensional Gateway, used to travel across the Multiverse. In the 31st century, the Emerald Eye of Ekron seems to generate a stronger green energy than the power rings of the Green Lantern Corps.