I just watched Onward ( https://youtu.be/gn5QmllRCn4 )...
Without spoilers, in a scene of the movie, I could'nt help thinking of Skuggasveinn work : he made the first Gelatinous Cube I ever saw or heard about (and a great one).
I won't be able to forget it !
I didn't have the knowledge of those monsters...
A year later : thanks dude.