John Stewart is perhaps the most beloved fan-favourite Green Lantern to ever hold said title, but it's easy to forget in all his steely cool that his most defining moment was a moment of incomprehensible failure and guilt.
A moment that challenges the bravado of many superheroes, this haunting image depicts the over-confident Stewart realising that, in his refusal of assistance from his fellow heroes, he has doomed a planet to oblivion.