 He eventually kills Charlie and takes his place, using his position to find the location of Newton before he is identified by Olivia and killed.Several other shapeshifters have been shown in the series, including one that aids in the parallel universe's Olivia's escape from the prime universe.Peter Bishop later takes it upon himself to kill all of the remaining shapeshifters in the Prime Universe, after he is able to decode their sleeper identities from the files on Fauxlivia's computer.