ITT we post your least favorite, most hated boss in all of RPG-land. For me it's this fucker.

"Looking for Baal?" No you fucking piece of shit I'm looking for you so I can fist your sorry ass to death.

Seriously on any difficulty he can be a problem. When you first encounter him he blindsides you. On hardcore he's one of the most terrifying things to go up against. He's fast, he slows you down a ton, he face-tanks you, and every character has a hard time with him if not properly prepared.

Fuck you Duriel you chink of utter fucking horse smegma.