There Is No Justice League
No hard upper limit to the power ring’s capabilities has yet been demonstrated; it is often referred to as “the most powerful weapon in the universe.”
The power ring’s most distinctive effect is the generation of green, solid-light constructs, the precise physical nature of which has never been specified. The size, complexity, and strength of these constructs is limited only by the ring-bearer’s willpower; whatever the wearer imagines, the ring will create.
When active, a power ring will encase its user in a protective, life-supporting force field. This force field allows the user to fly, travel through inhospitable environments (outer space, underwater, etc.), and enter hyperspace in order to move vast distances quickly. The ring also generates its wearer’s Green Lantern uniform: the uniform appears over their normal attire and vanishes at the user’s will.
Power rings also appear to be highly advanced computers; they are able to talk to and advise the wearer as to various courses of action, as well as act as a universal translator. The ring can also scan for energy signatures or particular objects. For more intricate problems or problems that require a back logged history (Of a planet, person, group, ETC.), the ring connects with the main power battery on Oa which is the “main” computer, of sorts.
When just a boy, Hal witnessed his greatest nightmare—his pilot father dying in a tragic plane crash. Nevertheless determined to follow in his footsteps, Hal repressed his fears, becoming a reckless, defiant test pilot. But when a dying alien crashes on Earth, the irresponsible Hal is chosen to be that alien’s successor in the Green Lantern Corps, a universe-wide peacekeeping force over 3,600 members strong.
And his life only gets wilder from there. Alien romances. Intergalactic wars. Power-hungry super-villains. Wielding a Green Lantern power ring—a weapon fueled by willpower—he can fly and create constructs made of pure energy, generating anything from massive green fists to emerald rifles that can snipe from a planet away. But while Hal tends to ignore his fears, he’ll learn the only way to truly master his ring’s power is by confronting and overcoming them.