Here, watch the 2 first minutes of the movie.
Manholes need to be dangerous. 'nuff said.

I haven’t seen CHUDs in the sewers or subways for quite a few versions. Dunno if I’m just missing them or they’re gone entirely.

They are there its just that they are extremely rare and the sewer spawns are somewhat strange, they are pretty dangerous actually

I encountered one… and I must say they are pretty dangerous.

Yes, dangerous. So who wouldn’t want them popping out of manholes at night? FUN!