Each Green Lantern wields a power ring that can generate a variety of effects, sustained purely by the ring wearer's imagination and strength of will. The greater the user's willpower, the more effective the ring. Notable Green Lantern - Alan Scott, Hal Jordan, Guy Gardner, John Stewart (JLU), Kyle Rayner. In brightest day, in blackest night,
No evil shall escape my sight
Let those who worship evil's might,
Beware my power... Green Lantern's light!