the only reason i lean towards ENFP for peter is he seems to be more focused on pursuing what he thinks is cool than pursuing what is true. also, introverted feeling doesn't care at all about what other people feel (because that falls under the realm of external evidence, which would be an extroverted function's job), especially if it is corrupt.
meh, he could be ENTP, though. it almost doesn't matter because his Ne runs so rampant -- there's almost no conscious filter on it