@Michelle we have to think about wolf logics from SoulKiller
So I believe as crazy as it sounds that when he is mafia he most likely would take the role as a leader, also the invest immunity is often a Godfather trait, so SoulKiller [PK] was most likely the mafia godfather and he also acted like that.
Him "bullying" Poison could always be an act. Like imagine him saying "don't worry Poison, I know what I do"
Now Poison is literally in bad light and she has no way to save herself from suspicion, ergo the bad plays by Poison are explained.
Now that SK is gone, mafia tried to target their original mislynch Tigerrr who was setup.
Tho mafia realized two of their own got wagonized this DP, ergo we are mostly town voting mafia/scum this DP.
If my tinfoil is wrong then Poison is a serial or another Indie.