Originally published on http://www.yankodesign.com/2015/04/08/tesseract-allspark-wondercube/ Tesseract. AllSpark. Wondercube! It takes a geek to get what I meant by that heading. Nevertheless, the Tesseract and the AllSpark are uber-powerful cubes from the Avengers and the Transformers cultures respectively. Each cube holds enough power to change life on earth.