Tesseract

The Tesseract is Evangelion Unit-01's concealing device in Evangelion: 3.0 You Can (Not) Redo, a three dimensional, cross-shaped, coffin-like structure that can be seen falling to Earth's orbit in the first 6 minutes of the movie. It is protected by several Mark.04, which are deployed in order to stop Asuka's and Mari's attempt to recover Shinji.