|Likes||Friends, family, and comrades|
|Dislikes||People with no manners|
|First Appearance||Requiem of the Golden Witch|
|Portrayed By||Ayako Kawasumi|
Lion Ushiromiya (右代宮 理御 Ushiromiya Rion?) is the first child of Krauss and Natsuhi Ushiromiya. Lion was given the silver ring of the Head’s Successor and will succeed the position of family head upon turning 20. Mild, polite, and without any clear faults, Lion is more suitable to become the next head than any other, and is adored by Kinzo. Lion only appears in the miracle fragment timeline.
Lion Ushiromiya is the incest-born child of Kinzo Ushiromiya and his daughter, Beatrice Ushiromiya. In an attempt to keep Kinzo's deed a secret, Lion was offered to Natsuhi Ushiromiya for adoption as Natsuhi was having trouble conceiving children of her own. Miraculously, Natsuhi accepted and raised Lion as her own child before giving birth to her biological daughter, Jessica.
Lion has an androgynous look with long blond hair tied into a ponytail and a reddish-pink double-breasted suit over a white shirt. Lion wears a silver ring indicating Lion's upcoming succession to the headship. Lion's shirt collar and left pant leg have the One-Winged Eagle imprinted on them.
Lion is a mild and polite person without any clear faults. Lion strongly believes in equality regardless of gender or rank. Because of this trait, Lion dislikes being called "successor-sama" by the rest of the family. Lion also doesn't like rude people as has a habit of pinchign their butts. According to one of Ryukishi's 'in-character' answers on Twitter, Lion believes that regardless of gender, one should be able to stand in the kitchen.
Because people would often ask about Lion's gender, Lion admits to having a bit of a complex towards such questions. When Will asks what Lion's gender is, Lion presents a retort suggesting the answer to Will's question should be obvious.
- Lion's name is pronounced "Lee-on" rather than "Lie-on".
- Lion's name may come from "Beatrice Castiglioni, since Lion is her grandchild.
- Willard H. Wright sometimes calls Lion his Watson. Lion even turns it back on him at one point by calling him "Willard Holmes".
- Lion's palatte swap in Ougon Musou Kyoku CROSS is based off the character Saber from Fate/Zero. They also share the same voice actress.