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Corresponding cardKey Mace
English name
  • Earu
Other namesKey Mace
  • Female
Anime debutYu-Gi-Oh! episode 04343: "Legendary Heroes, Part 1"
Appears in
AnimeYu-Gi-Oh! (anime)

Earu is a character based on the card "Key Mace", that appeared in KaibaCorp's Legendary Heroes game.


Earu is Princess Adena's guide.

Earu first appears to Yugi, Joey, Mai and Mokuba to guide them to the town.

It later leads them to Adena in the Labyrinth and then guides the party out.

As the party ventured to the "Castle of Dark Illusions" on the airship, they were attacked by monsters. Earu jumped out in front of one of their attacks, saving Yugi, but causing herself to be killed.

At the end of the game, Adena transformed into the "Mystical Elf" and revived all the fallen adventurers, including Earu.