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Mr. Dice are large, red dice that appear as enemies in Donkey Kong 64. It appears similar to a traditional die, with the side representing 'two' acting as the face; the dots are arranged to look more like eyes. Mr. Dice have yellow arms and legs with light green gloves and shoes on the end of them.
Mr. Dice only appear in Frantic Factory. Two Mr. Dices are found in the factory's Testing Room, while another one is fought by Chunky in his R&D puzzle room; two more Mr. Dice are fought by Diddy in his R&D puzzle room. They can easily be defeated by a single hit from most attacks.
The Toy Monster that appears in Chunky's R&D puzzle room uses a Mr. Dice for its head.