Unknown (disambiguation)

The terms Unknown (謎の男) or ??? may refer to a number of characters in the Kingdom Hearts series.
 * Xemnas in Kingdom Hearts Final Mix
 * Marluxia in Kingdom Hearts: Chain of Memories
 * Riku in Kingdom Hearts II and Kingdom Hearts 358/2 Days
 * Xion in Kingdom Hearts 358/2 Days
 * Data-Roxas in Kingdom Hearts coded
 * Xehanort in Kingdom Hearts Birth by Sleep and Kingdom Hearts 3D: Dream Drop Distance
 * Unknown in Kingdom Hearts χ.