Are there blocks that can stop all enemies?

[Drachenbauer]

I tried to build an enemie-showcase level.

For this i made rectangles of blocks with space for the enemies inside.

normal walking enemies and also the hopping green paracoopa are secure trapped inside.

but som flying enemies and the fish and squid enemies from water-levels van leave theese boxes.

how can i trap them inside, too?

[Qwerbey]

You can't. You'd need to make a new version of it that collides with the world.