Bagua CubeThe mass produced an enhanced successor of the Octo-Star.
Bermuda SkewbA shape variation of a "Bermuda ZongZi" or also known as "Bermuda Tetrahedron"
Beta CubeA combination of Wall cube and Slice cube.
Brick CubeA cubical 2x3x3 which solved position is a midturn state. This one was made before the 2x3x3 was mass produced again.
Bump 27A 2x2x2 with three layers of cubies glued on.
Bump 339A bumped version of a mass produced 3x3x9 V2.
Bump Burr4A bumped version of the Burr Cube which itself is a bandaged 4x4x4.