Most obnoxious enemies in video games.

[northeast rower]

Cougars in Red Dead... oh lord, all the dead horses...

Those fucking bug things in Resident Evil 5.

Scions in Mass Effect 2. OH GOD DAMMIT I GOT SHOCKWAVE'D AGAIN. What a surprise.

 

[Samuel Adams]

1)Cougars in Red Dead:Redemption.
2)Zubat.
3)ANYTHING in Super Meat boy (I still love that game though)
and
4)Anyone in Farcry 2.

 

[Siege_TF]

Cliff Racers. Cliff Racers EVERYWHERE.
Necrons, both TT and RTS.
Children/teenagers who want to PVP in any game that has PVP.

 

[A Weary Exile]

Cazadors (Fallout New Vegas) For reasons everyone should know of by now.

I. Fucking. Hate. Cazadors. Their BS speed and attack power is made worse by the fact that my character is about as light as they come.

 

[TheYellowCellPhone]

Super Mutants armed with Missle Launchers in Fallout 3.

Walking over a hill in the Wasteland, and the next second you've pissed yourself, lost a third of your health, and your left leg is crippled.

And those motherfuckers usually travel in groups, so you have a minigun or assualt rifle ripping you a new one while you chug the Stimpacks.

 

[Rusty Bucket]

Mutalisks from Starcraft. Fuck those guys.

So what do you hate more?

Mutalisk rush?
Zergling rush?
or Dark Templar rush?

Zergling rushes are fairly easy to deal with (I'm assuming you're meaning like a 6-8 pool here) once you know how, and I don't mind being DT rushed because they're so damn cool. But Mutalisks are like the definition of obnoxious. Want to push out? Now you have no workers. Build cannons on your worker line? Down go your Pylons. Put cannons everywhere? Now your army size is borked, and the Muta's have just moved to an expansion instead of your main.

 

[rockyoumonkeys]

Small things that swarm you. Specifically, those tiny things in Dead Space that come out of vents or toilets or whatever.

Small things that swarm you and then explode. Forget what they're called, but they're in Singularity.