I don't know if Peter's way of gaining other's powers is proximity, or through touch.
Did he touch his brother and the painter before he got their powers?
'Cause I remember him bumping into Claire, and then later on touching her hand(s) when he's getting her to start running away from Sylar in the locker-room.
He touched Sylar, too, (besides being in his proximity) so I wonder if he has regenerative powers and telekenesis.
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