Most annoying enemy.

[Amethyst Wind]

Manhacks. The Zubats of Half Life.

 

[Peteron]

Lets see....um...

1)Magikarp
2)Zubat
3)Tentacool
4)Suicide Grunts
5)Centaurs (Fallout)
6)Harbinger

 

[Kuchinawa212]

Bats in Prince of Persia (sands of time)
swing, swing, swing, swing comeback here you little AGGGHHHOOOOHHH man that was close, *pulls self up* come one, two more *swing*

 

[YouBecame]

Anyone who played Homeworld: Cataclysm will remember the Beast, and that very frustrating time when half of your hive frigate fleet suddenly just start revolving and attacking you.

Sodding cruise missiles.

 

[kouriichi]

Every enemy in halo reach. Every non-boss in the god of war games. Every random battle in ff7. Every 13 year old in call of duty. Every bot survivor in L4D when your on special infected. Every pokemon you cant catch with a regular pokeball. Every gym leader in said pokemon games. The Grox in Spore. The terran in SC2.

And ofcourse, worst of all, those freaky necro-babys in Dead Space.

 

[ShakesZX]

Any end boss in most fighting games. Seriously? Teleport moves?

 

[MasterOfWorlds]

Cliff Racers from Marrowind. >.>

They're not really all that threatening, but they attack you and make this aweful "CAW" noise, and they can give you diseases and when you run, they follow you FOREVER. I once had a group of about 20-30 of them after me and ran to one of the cities in the middle of nowhere. They killed the guards and we all tried to fight them off, but they killed like 90% of the guards.

I hate those little bastards. I hate them good.

 

[BobisOnlyBob]

Raptors in Zone of the Enders, especially playing on Hard. Once they get full shields up, a commander on them... the first large gang of them at the end of the spaceship in ZOE2 before you get to Mars are hellish.

 

[P-mac]

MT Mobile Bombs from Armored Core 3/ Armored Core 3 Silent Line

Those little shits are so incredibly tiny and hard to even remotely see.
The worst part is that they do massive damage and spawn out of an equally tiny MT mech every few seconds.

 

[RedDeadFred]

Halo Grunts: stupid and pointless
this thread is over

On Legendary they're actually a pain in the ass.

OT: The Marionette boss from Shining Force. Seriously, considering you're barely into the game this guy is really hard. He casts level 3 Freeze. This has extremely long range can hit up to five people at once and one hits most of your fighters.
Hardest guy in the game.

 

[DementedSheep]

it's been done to death however: Cliff racers

Spoiler: for entertainment value

FUUUU those things were so annoying. They are half the reason I've never actualy finished morrowind.

 

[camokkid]

Psychos from Borderlands.

They travel in packs and can take away half of your health in one hit.

And they have an attack where they can throw their club at you from any distance and have dead-on accuracy.

 

[The Night Shade]

Bats or Medusa Heads

 

[Krythe]

Every enemy in halo reach. Every non-boss in the god of war games. Every random battle in ff7. Every 13 year old in call of duty. Every bot survivor in L4D when your on special infected. Every pokemon you cant catch with a regular pokeball. Every gym leader in said pokemon games. The Grox in Spore. The terran in SC2.

And ofcourse, worst of all, those freaky necro-babys in Dead Space.

You realize if we took all that out, these games would be about fifteen minutes long, right?

 

[Nixzilla]

Spoiler: Dead Rising 2 Boss SPOILER!!!!!!!! do not look at in less you dont care about ruining the entire game or will never play it

Sullivan

and those birds things on morrowind i swear to god they dont have a leash

 

[kouriichi]

Every enemy in halo reach. Every non-boss in the god of war games. Every random battle in ff7. Every 13 year old in call of duty. Every bot survivor in L4D when your on special infected. Every pokemon you cant catch with a regular pokeball. Every gym leader in said pokemon games. The Grox in Spore. The terran in SC2.

And ofcourse, worst of all, those freaky necro-babys in Dead Space.

You realize if we took all that out, these games would be about fifteen minutes long, right?

Id rather have only 15 minutes of game play then 7-10 hours of pointless grind.

 

[MikailCaboose]

Those goddamned ninja bitches in Prince of Persia: Warrior Within. If it's one, it's not bad. More than one? Oh. Dear. God.
Then I just find those Scavenger Droids in SW: Republic Commando to be a nuisance.
I also vote for one in Sonic and the Secret Rings:

Spoiler

The control scheme. Yup.

 

[MikailCaboose]

it's been done to death however: Cliff racers

Spoiler: for entertainment value

This is why I'm glad I modded my game to set the Cliffracer's aggression rate to 30/100 (that way they don't auto-attack on sight) instead of 90/100

 

[Arkvoodle]

The Kryll.