Princess Eclair

Princess Eclair was the damsel-in-distress that Luigi rescued from the clutches of the monstrous Chestnut King. However, as it turns out, Princess Eclair was actually the king's lover, who had been turned into a monster by the sinister Crepe. This story is told by Luigi when Mario talks to him throughout the events of Paper Mario: The Thousand-Year Door.

During Luigi's adventure, the green-clad plumber fell in love with Princess Eclair. However, after he discovered that the Chestnut King was Princess Eclair's fiancée, Luigi lost the hope of ever forming a romantic relationship with the princess.

She is also mentioned in Luigi's five-book series Super Luigi, which is sold in Paper Mario: The Thousand-Year Door.