Princess Eclair

From the Super Mario Wiki

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 complicated 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 Éclair'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.

Waffle Kingdom
Waffle Kingdom Characters and Items Blooey \| Chestnut King \| Cranberry \| Hayzee \| Jerry \| Luffs \| Marvelous Compass \| Minister Crepe \| Princess Eclair \| Screamy \| Torque
Waffle Kingdom Locations Circuit Break Island \| Hatesong Tower \| Jazzafrazz Town \| Plumpbelly Village \| Pudding Continent \| Rapturous Ruins \| Rumblebump Volcano \| Waffle Kingdom

Hostages

Royalty
Royalty in the Mario series Baby Bowser \| Baby Daisy \| Baby Peach \| Big Bob-omb \| Bow \| Bowletta \| Bowser \| Bowser Jr. \| Chestnut King \| Chief Chilly \| King Croacus I \| Prince Croacus \| Queen Croacus II \| King Croacus III \| King Croacus IV \| Crystal King \| Elder Princess Shroob \| Goomboss \| Iggy Koopa \| Queen Jaydes \| King Boo \| King Fret \| King Grambi \| King Kaliente \| King Nimbus \| King Sammer \| King Totomesu \| King Tut \| Koopalings \| Larry Koopa \| Lemmy Koopa \| Ludwig Von Koopa \| Mallow \| Morton Koopa Jr. \| Pixl Queen \| Prince Peasley \| Princess Daisy \| Princess Éclair \| Princess Peach \| Prince Pine \| Princess Rosalina \| Princess Shroob \| Queen Bean \| Queen Bee \| Queen Nimbus \| Roy Koopa \| Shadow Queen \| Spore King \| Squirp Korogaline Squirpina \| Squirpina XIV \| Tutankoopa \| Valentina \| Wart \| Wendy O. Koopa \| Whomp King
Royalty in the Donkey Kong series Banana Bird Queen \| Banana Fairy Queen \| Cactus King \| Double Tusk \| Dread Kong \| Fleet Roc \| Ghastly King \| Grave Tusk \| Hard Roc \| Karate Kong \| King K. Rool \| King Zing \| Ninja Kong \| Queen B. \| Rogue-Hog \| Scruff Roc \| Sumo Kong \| Thunder Roc \| Torch Tusk \| Turret Tusk
Royalty in other series Blaze the Cat \| King Dedede \| Marth \| Prince Froggy \| Palutena \| Princess Shokora \| Queen Melfull \| Stafy \| Zelda
Non-Game Royalty Elvin Parsley \| Holly Mackerel \| King James \| King Mackerel \| King Mushroomkhamen \| King Neptune \| King Toadstool \| King Windbag \| Mark Twang \| Mervin the Magician \| Mushroom King \| Mouser \| Prince Haru \| Prince Hugo the Huge \| Prince Hugo the Huge's Parrot \| Prince Mushroomkhamen \| Queen Mushroomkhamen \| Prince Pompadour \| Queen Rotunda \| Royal Cow \| Sultan \| Sultan Pasbah