How to create these miniblocks?

On an server (entengames.de) i found these morphs.
http://prntscr.com/h347kv
I tried to do this too, but i have no idea how to create something like this.
Can someone help me please?

 

all mcpe server does not turn on PmmP

but you verify it by doing /about or /ver

 

lol, i think you need to create entity block whit packets and then set Data Scale.. (i think)

 

The owner now told me, its an skin xD

 

The same principle used in https://github.com/BlockHorizons/SlugRace

It's called skin geometry.

 

I can't tell if you mean a Tile or a falling block entity