I've got a very good recommendation for a couple of enemies.
Earlier, I mentioned SCP-173. This is the guy.
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He's made out of reinforced concrete and rebar. He stays still if you look at him, but if you blink, he moves. If he gets too close, he breaks your neck.
Yea, but if ur gonna use him, use him 1)as a single unit. we dont need ninety of these fuckers tryin to snap your neck at the same time (nao that i think about it, that would be a hilarious scene) and 2) in a scene with few character. It's going to be highly unlikely that Shiki, Komachi, Shinki, John, Hank, Renamon, Yuuka, Yukari, Yumeko, X, Axl, and aqua would blink at the same time. that would be creepy.
But otherwise, use him in any twisted way you desire!