Laira, an alien G.L., now the renegade Red Lantern!
G'nort as a human Green Lantern.
Ash, the vampire hunting Green Lantern.
Waverly and his hound, Bud.  A Green Lantern when America was young.
Adam
A wild west hero.
Chalie Vicker, Warlord!
Alan Scott
Defeating the Ultra-Humanite!
Kreon
The last Green Lantern of the Universe from Action Comics #386.
The noble, Hal Jordan, fighting for two universes.
A Guardian of the Universe
From the new Justice League The New Frontier animated feature!