I'm not much of a role player (well really at all) but I have to say there are a couple champs that when I see on the enemy field I make an additional effort to make his/her life hell. I don't know what it is but seeing Akali especially makes my blood boil. I think its that people that play her seem to act like Darius players, over confident and cocky simply because they have an easy kit to use. So maybe the player base itself has contributed to my ire at her. Does anyone else have a champion like this?

DO NOT INCLUDE TEEMO. Everyone hates Teemo. That's a given.

Draven, I enjoy making his life miserable whenever I can.

ಠ_ಠ dat ****hole who keeps shooting at ahri from on top of the midlane tower

I consider anyone who has a lore tie-in on the opposing team to be a rival, and anyone with a lore tie-in on my team to be a best-friend-for-life.

Example
if u are Garren,
Enemy Lux = Traitor
Friendly Lux = must save from enemy team at all cost

I've always hated Lee Sin.

I even play a pretty good Lee Sin...but only play him when I random him because I despise him so much...

I think it goes back to late season 2 when he was on a tier of his own as a jungler...

He's still pretty freaking strong, but a few others have the spot light... still hate him though...

Ezreal. Easily, the most powerful and least-risky adc to play. Every time I fight him I want to chew brick to dust.

Potshots and flash+e out of all ganks or engagements! So much fun!

I hate taric... i make it my purpose to kill him first always after laning phase for pissing me off so much >:I

Olaf. As a Nautilus main, every time I see Olaf I die a little bit inside.

I play as Rengar, so Kha' Zix.