Ha you are talking about fluffy3d which vanished right after ppl started talking about how similar to GB the posters and animations were, and then X3D came out of nowhere few weeks later.....
Now X3D could be anyone, a fanboy of GB even, and they attended every stream and learned every trick like a copycat which explains how they are so similar.
But the way they pose, animate and the models having the same body but different head is very suspicious, i am fine with it tbh because the black widow stuff was amazing and they are currently working on something with black cat and venom which is looking pretty gucci aswell.