Charles Xavier/w Green Lantern Ring vs ???

Xavier gets the ring and one year of practice with it. What potential does he have? and Who would be the most powerful person he could beat?

None.

Hed do better with a blue one.

I forget what does blue do? Other then turn you into a space hippy?

^ The blue light's main function/purpose is to bolster the green light -- hope amps will.

Contrary to popular belief, however, the blue rings can be used offensively by themselves, just like the other colors/emotions of the spectrum. Saint Walker demonstrated this fact against Relic(for all the good it did against his specialized tech.) Blue Lanterns are just a very peaceful Corps whom rarely ever resort to violence.

They are definitely the pussies 'hippies' of the emotional spectrum, though. 👆