kael'thas
A blood elf from World of Warcraft who you can't kill because everything you do to him is just a tiny annoyance. He'll show up again in Icecrown because Magisters' Terrace was just a tiny annoyance!
You just killed Kael'thas 10 times. He's still coming back. You're a idiot.
He said Magisters' Terrace was just a tiny annoyance. Now he's in Icecrown again. What a waste.
You tried to kill him with a fireball. He laughed. You're a failure.