Lippo is the proctor over the third and fourth phases of the Hunter Exam: the Trick Tower and the manhunt on Zevil Island. As a prison warden, Lippo concocts devious ideas that test the candidates in different aspects of group dynamics, both in a communal and individual front. Many candidates are forced to work together to have any chance of passing Lippo's tests.

He is a Blacklist Hunter with a repertoire with includes the capture of Johness the Ripper: a famous mass murderer. In order to coerce prisoners to fight Hunter Exam candidates in the Trick Tower, he offers to shorten the sentence of any inmate by one year for every hour they stall the examinees.