One of the toughest normal enemies that you fight in Resident Evil 4. They have spikes in them that extend when you are in range. The best way to defeat one is eiher a rocket launcher or the chicago typeweiter. The game tells you that you have to use the infrared scope and the sniper to defeat them but it is slow.
"I was playing re4 last night and an iron maiden killed me. It was an awesome death though"