A tesseract is a odd object in scribblenauts unlimited. It is a 4 demensional analog of a cube. A tesseract is a six surfaced object that consists of 8 cubical cells. It does nothing at all and is invisible. One is found in underscore mine in a secret base under a person who wants to know witch bat is a vampire in the mision turn maxwell into a super hero.
It is a object that is useless and only used in building.