Green Lantern rings have a safeguard that prevents them from killing a Guardians of the Universe, but somehow Hal Jordan was able to overcome that and kill Krona, the Mad Guardian.
From – Green Lantern Vol. 4 #67
Green Lantern rings have a safeguard that prevents them from killing a Guardians of the Universe, but somehow Hal Jordan was able to overcome that and kill Krona, the Mad Guardian.
From – Green Lantern Vol. 4 #67
