#4 The Terminator
This one is pretty simple - Roman Reigns destroys literally everybody, and he doesn't give a damn who he offends. Reigns returns to action with a full beard and a mean attitude to boot, with a blank expression on his face making him seem like The Terminator. Reigns beats down on all of his opponents with ruthless aggression, often getting himself disqualified from bouts.
He doesn't rise to the crowd or react to anything they may throw at him; and instead, he bulldozes his way to the Universal Championship. As an independent heel, Reigns holds onto the title for months on end - even cheating to hold onto the strap if necessary. Simply put, Reigns harnesses the negative responses that he's been getting and turns it into the perfect heel turn.
Never turn your back on family.