Peeper was eaten by Predator X in X-Factor (3rd series) #26. He was presumably restored under Krakoan Resurrection Protocols. Quinn made a brief appearance in Ravencroft #3 in his addled "Peepers" persona, but reappeared as a more clear-headed indivdiual in S.W.O.R.D. (2nd series) #1.
Quinn became Occult in Captain America (1st series) #343 and returned to being Peeper in New Warriors (2nd series) #6. He refered to himself as "Peepers" in "The Hunted" arc from Wolverine (2nd series) #162-166.