Board Thread:Questions and Answers/@comment-7657843-20150504102237/@comment-1298029-20150522002218

Penhaligon wrote: Yes. Like I said in another commentary, the Tesseract is only a weapon to use the Space Stone's powers without a bad feedback It's probable, but we don't actually know the reason the Tesseract object was created.

But I agree that the cube should probably be classed as an alternate form.

I'm not sure whether or not the yellow gem as it appears on Vision's forehead is a different form from the basic one that was inside the sceptre. It looks slightly different, though.