The best minor enemy character!

Who do you think the best minor enemy character in any game is? I'm not talking about big bosses like Bowser or Dr. Robotnik, I'm talking about the little enemies...

I'd say the Hammer Bros./Boomerang Bros. variants from the Super Mario series (any games) or the Lightning demons from Legacy of Kain.

What do you guys say/think?

Reno from FF7, that tazer was badass

I'd have to say maybe lickers from resident evil 2. They were pretty challenging as a typical enemy

from a different game... hmm, I really enjoyed the little bombs that walked across the track in multiplayer mode for Mario Kart 64. They spiced up an otherwise mundane race.

I can name a few:
Harpy (Haunted Castle/Arcade Castlvania)
Demon Doll (Castlevania Chronicles)
Evil Fetus (Casltevania Chronicles)
Malformed Clone (Judge Dredd)
Met (nearly all Megaman games)
Buster Beetle (Super Mario Bros. 3)
Mochtroid (Super Metroid)
Fleamen (Most Castlevania games)
Warmech (Final Fantasy)
Bonebreaker (X-Men arcade)