Pentagonal Pyramid SkewbAn Ultimate Skewb with 6 sides "deleted".
Aka Extended Ultimate Skewb F80000000000000003FF07FEAA8000
Plateus BipolarA skewb (more precise: an Ultimate Skewb) in shape of a triangular dipyramid.
Proxy Cube (Earth)An MF8 Crazy 3x3x3 modified and extended on 4 sides, with 3 edges truncated.
Real kite cubeA 3x3x3 truncated on two sides into a prism with a kite-shape as base.
Shallower MadnessA triangular dipyramid with a slice pattern matching the Deeper Madness puzzle by Oskar van Deventer. However, the puzzle is shallow-cut, rather than deeper-than-origin-cut.
Squished Ghost CubeA ghost cube in shape of a rhombic prism which pretends to be of cubic shape.