The creepy and fiendish enemies in the Half-Life series. I mean, what's a game without Zombies??
The normal headcrabs. Yes, these aren't Legos. They're made of Sculpy. But they can attach to Legos, and I needed satisfactory headcrabs, and no matter how hard I tried, I could not make a good one out of Legos. Sue me.
Now the headcrab attached person. Note that he is wearing a white t-shirt and blue jeans. Exactly what every headcrab zombie wears. Except fast zombies. But they don't even have skin. Anyway...