Doppelganger Dice
| Button Notation: | D |
| BMO Notation: | D |
After a Doppelganger Die Power Attacks, replace it with an exact copy of the die it attacked, then re-roll it.
Doppelganger Dice were created by Dana Huyler for the original Button Men Online site and introduced them in the Free Radicals set; they predate Morph Dice.