From the Super Mario Wiki
Retrieved from "https://www.mariowiki.com/index.php?title=Mr._Dice&oldid=2401675"
Mr. Dice are rarely encountered exclusively in Frantic Factory. Two Mr. Dice are found in a large room filled with giant toy blocks. Another one can be found in the room where Chunky Kong fights the Toy Monster; several Mr. Dice also compose the Toy Monster's body. Two more Mr. Dice can be found in Diddy Kong's puzzle room in the R&D Room.
A Mr. Dice can be defeated in one hit.