I can't remember details very well but yeah I think whoever the victim was , was pulled up into the vent. Maybe it was a teacher and not a bully.

The monster was likely a man in a suit so probably humanoid.

When I try to imagine it , I feel like it was dark brown and black. Maybe slimy or wet. But I can't say for sure.

I think I must have seen this movie when I was like 10-12 ish.

So that would have been 1995-1997. Show could have came out around then or earlier.

I assume some of my memory details aren't quite right since Ive never been able to find it.

Do you have a lead?

I have spent numerous occasions searching. Even watching full reviews of every tales of the crypt episode, thinking it had to be one of those.

The only other lead I have is this. I recall this other horror show or short anthology episode. And I thought maybe it was from the same show /anthology.

In the scene was a weird kid who collected dead flies and made little diorama like scenes with them. Glued to wires or something. Or maybe it was cockroaches.

And the kid was chubby. Dorky looking.

I can't remember anything else. But the dead insects being made into little scenes was disturbing.

Idk that's my only other possible clue.