Sentinels of the Multiverse: The Scholar

John, The Scholar, mostly keeps to himself, though he’s always willing
to share a bit of wisdom and a bite to eat with anyone who passes by.
However, now and again, he feels the ley-lines pull and twang sharply,
which shouldn't happen. He’ll travel from one place to another, easing
the tension on the lines by stopping the odd, extra-planar entity from
entering this dimension, or keeping the crazed scientist from pulling
the moon into the earth, or halting the nightmarish legions of a
comatose little girl. Sometimes, he’ll work with other gentle souls to
accomplish his goal - he doesn't mind a little company now and then.