Dumbbell CubeTwo 3x3x3s connected with a complex mechanism. Every turned side is followed by one side of the other cube.
Dumbbell SkewbTwo Skewbs (or better: Holey Skewbs) connected with a complex mechanism. Every turn is followed by one turn of the other Skewb.
Evil mask cubeA fused cube, extended to become a 4x4 evil twins cube. After that it was shaped and stickered to look like the 4x4 mask cube.
Evil TwinA Fused 2x2x2 with additional cubies.
Evil Twin 4x4x4A Fused Cube with additional cubies glued on to create the illusion of a 4x4x4
Evil Twin IIThis is the Evil Twin II (5x5x5) compared with the orginal (3x3x3).
Fortress CubeA fused puzzle which combines two different puzzles.
Fortress IIEight 3x3x3's connected with one 6x6x6 between them. Since they share only one piece each the nine puzzles can be solved independently.
FractalmorphixOne big Pyramorphix with four attached smaller Pyramorphixes.