Her Eggcelency is a humanoid Yo-kai with pale skin. She has long, white hair with the bottom part being chiffon white. Her eyes are golden-yellow with red eye shadow. Her eyebrows are small and thick. Her Eggcelency wears a red ribbon neck collar, a salmon pink kimono held by a red obi with a pale indigo rope, and a red crown. She rests on a cracked eggshell, and several fragments of said eggshell can be found floating around her head. Her Eggcelency is seen holding a small egg yolk with a face.
Yo-kai Watch 3
In the Japanese version, she could only be obtained by entering in a code for the Wobbly Egg Key Item obtained from Yo-kai Watch: Wibble Wobble, after clearing missions to obtain the Yo-kai in the game. As of February 14, 2020, the missions are no longer available on new accounts, but they still can be cleared on existing accounts before the date.
She has been made much simpler to obtain in the international versions, as the item is required to be scanned via a QR code instead. In the Japanese version, she only appears in Yo-kai Watch 3: Sukiyaki and will be in the sukiyaki restaurant in New Yo-kai City where he can be fought and befriended via the regular method.
Yo-kai Watch: Wibble Wobble
Complete the daily mission Her Eggcelency's Test to get a Wobbly Egg. The Wobbly Egg will take the player to a map called Wobbly Egg's Room. In Wobbly Egg's Room, there is a single stage with Her Eggcelency on it. If the player fails to befriend Her Eggcelency on this stage, the player will need to use another Wobbly Egg for another chance at befriending her.
Tamago no Kimi's design is a wordplay on "egg yolk" (Japanese: 卵の黄身,Tamago no Kimi), with the kanji for "yolk" being a homophone for "ruler" (Japanese: 君,Kimi).
"Her Eggcelency" is a pun with "egg" and "her excellency," an honorific style given to certain high-level officers of a sovereign state or members of an aristocracy.
"Oeuxcellence" is the same portmanteau than English, but with the French words : "Oeuf" (Egg) and "Excellence" for (Excellency).
"Yemajestad" combines "Yema" (Yolk) and "Majestad" (Majesty).
Due to text limitations her name is shortened to "Eggcelency".
If the player uses the code for Her Eggcelency in Yo-kai Watch 3: Sushi or Yo-kai Watch 3: Tempura, the player will receive Crank-a-kai coins instead of the Wobbly Egg.
With the reveal of the shut down of Wibble Wobble's servers, it was unknown how this Yo-kai will be obtainable in an international release of Yo-kai Watch 3 (as having a copy of PuniPuni was required to obtain them) until Level 5 released a QR code that could be used to claim the Wobbly Egg.
Her "random" nicknames are Amber, Georgia, Yolky, and Celeste.