10 Most Powerful Characters Killed By Hal Jordan's Green Lantern

While it has been debated as to whether or not Sun-Eaters are sentient, beings such as Solaris and Starbreaker prove that the cosmic entities are capable of instinct and thought to some degree. Regardless of their sentience (or lack thereof), they are very destructive creatures and this can be seen in the Final Night story.

After destroying Tamaran (Starfire's homeworld)'s sun, the otherworldly force makes its way to our solar system and this prompted the response of the Justice League. Despite valiant efforts on the heroes' part to prevent catastrophe, the Sun-Eater consumes much of the Sun's energy.

This forces Lex Luthor to work with the heroes in devising a means of stopping the entity. After some confusion, the Legionnaire Ferro Lad begins the star-saving mission but the plan is thwarted by Hal Jordan (under Parallax's control at the time), who uses his incredible power to destroy the Sun-Eater but at the cost of his life.