Seriously? This is the Writer's Block?
Green Lantern. No question.
Yes, With great power yada yada.. but that's covered in the Oath. But a GL's responsibility is universal. As in.. not just on this planet. Obligated to help out nearby planets. They are considered some of the heavy lifters in the DCU. So, you get to see earth from orbit. You have just a ton of power, but also a team to help you out. They fixed that little problem with the color yellow.
and even after all that? The accessories darling. I do love jewelry.
So say it with me..
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!