This character emerges from E.T.A. Hoffmann's 1816 fairy tale "The Nutcracker and the Mouse King." He begins as a wooden nutcracker doll, a Christmas gift for Marie (known as Clara in some versions) from her godfather Drosselmeyer. When Marie's brother Fritz damages the doll, Marie cares for his injuries, showing early kindness. That night, the nutcracker animates, commanding an army of toys against the invading Mouse King and his forces. Marie aids him by throwing her slipper at the Mouse King, allowing the nutcracker to achieve victory. This act shatters an initial enchantment, partially restoring his human form as a prince. He presents Marie with the Mouse King's seven crowns as proof.

The prince then reveals his history to Marie: he is Drosselmeyer's nephew, cursed into the nutcracker's form by the Mouse King's mother, Queen Mouserinks. The curse originated when he shattered the enchanted Krakatuk nut to restore Princess Pirlipat's beauty but stumbled during the ritual, shifting the curse onto himself. Princess Pirlipat subsequently rejected him because of his altered appearance.

Later, the Mouse King's ghost haunts Marie, demanding tribute. The prince supplies Marie with a sword, and she helps him defeat the Mouse King permanently. Marie's declaration of unconditional love—unlike Pirlipat's rejection—fully breaks the curse. The prince regains his human form and asks Marie to rule his magical kingdom as his queen. His journey concludes with restoration and marriage to Marie, symbolizing the triumph of loyalty and compassion over superficial judgments. His arc encompasses transformation, heroic conflict, and redemption through another's steadfast acceptance.