He's a character appearing in the Camelot Singularity of Fate/Grand Order.

The story focuses on the background of Mash Kyrielight and Romani Archaman, and the events leading up to the Seventh Singularity, Absolute Demonic Front Babylonia.
 
 
This episode aired on August 3, 2019 at Fate/Grand Order Fes. 2019: Chaldea Park. It was available for download on the Fate/Grand Order mobile app, from August 4, 2019 to August 11, 2019.

The wandering knight, Bedivere, reaches the end of his journey.
 
The year is A.D. 1273 in Jerusalem.
 
The Holy Land has been transformed into a massive desert, the people have been forced out of their homes, and three major powers wage war with each other in this wasteland. The Knights of the Round Table come together to protect the Holy City and their Lion King. With the whole of his kingdom summoned into a strange land, Ozymandias, the Sun-King, quietly plots against the tyranny of this bizarre realm.
 
The mountain people, protectors of those who were stripped of their land, await their chance at rebellion. In order to fulfill his mission, Bedivere heads for the Holy City where the Lion King rules. There he meets humanity’s final Master, Ritsuka Fujimaru, who has come to Jerusalem, accompanied by his Demi-Servant, Mash Kyrielight, in their quest to restore human history.
 
Bedivere joins with Fujimaru and his companions to undertake this quest.
 
(Source: Official Website)

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The second part in a two-part anime film project adapting the "Sixth Singularity - Divine Realm of the Round Table: Camelot" story from the game.
 
(Source: Anime News Network)

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