The Triple Megaminx is three megaminxes attached. The middle one is missing two faces, and the other two are each missing one. The puzzles are
Gan Megaminx M Magnetic Stickerless Magic Speed Cube Puzzle Toy
GAN Megaminx - LighterTwisty Fun - GANCube
Roxenda Speed Cube Set, Magic Cube Set of Pyramid Megaminx Cube Smooth Puzzle Cube (2 Pack(Black)) - ROXENDA
Megaminx Magic Cube Magnetic 12 Side Megaminx Magic Cube - Megaminx Cube 3x3x3 - Aliexpress
Double Megaminx
Authfort 3 X 3 Megaminx Sculpted Stickerless Pentagon cube and 3 X 3 Barrel Speed Stickerless Cube combo pack of 2 - 3 X 3 Megaminx Sculpted Stickerless Pentagon cube and 3
Yuxin Little Magic Megaminx 3x3 V3 M
Megaminx - Wikipedia
Triple Megaminx
Clearance Sale] mf8 12-axis cube - 9cm Big MegaMinx []
Megaminx 3 x 3 Megaminx Magic 3D Puzzle