This applies to just about every single end boss in the game.
"To fight me, you will have to fight my General/Lieutenant/Bodyguard/Etc!"
*You Kill Said Obstacle*
"No matter, I didn't need him/that anyways!"
Diablo though cracks me up. Usually I just Escape past all her dialogue but I wanted to listen to it this time.
After you kill one of her main Lieutenants:
"My armies still pour through the Hell rift!"
*Oh... guess I better find that rift.*
*Kill Hell rift*
"That is not my only rift!"
*Oh... alright then, guess I better find that other one*
"I didn't need that anyways, I'm not scared. You can fight me on top of this huge spire."
I'm actually having fun in the game since last year but who in the world wrote the dialogue and the story for this game? lol