Harry Potter's Grand Priest

How many identities does he have? Some people said that he was the reincarnation of Merlin, but he scoffed: "Just him?" Some say he's the CEO of Slytherin, and he's unmoved. Voldemort once said: "Boy, hang out with me, I guarantee you a worry-free future!" He frowned and replied, "Really? Then I'll think about it. Well... I mean I'll consider taking you on as my younger brother!" He is a great wizard who can use three lines of magic. He is a lucky man from Azeroth. Facing the beauty, he could only smile and say: "Rebirth without a harem will end in nothing!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.