Yuri Kozukata (不来方夕莉) is a character from the Fatal Frame series. She is the central protagonist of the fifth game in the series, Fatal Frame: Maiden of Black Water.
Yuri is the central protagonist of Maiden of Black Water, the fifth main entry in the Fatal Frame franchise. She's a 19-year-old woman who survived a car accident that killed her whole family; because of the accident, she developed a "Sixth Sense." This ability allows her to see ghosts. Throughout the game, she helps the other protagonists in solving strange cases around Mt. Hikami, a notoriously haunted location in the outskirts of Japan. Yuri is led to Mt. Hikami by her sixth sense and travels around the area and back, taking photographs of spirits with her Camera Obscura, a specialized camera that can take photographs and exorcise ghosts.
While the Camera Obscura's crosshair is based on the one that appears on the Wii U's GamePad or on the screen (depending on the set control scheme) and the ghostly wails are loosely based on the sound effects ghosts play when damaged in Fatal Frame: Maiden of Black Water, the grainy effects and inverted colors seem to only be referencing her home series's status as a camera-oriented horror game.
Interestingly, the image in the background image is taken from the game's prologue drop, specifically the image displayed before the drop begins.
As an Assist Trophy
Yuri appears as an Assist Trophy in Ultimate. When summoned, she says "なに？" (What?) and aims her Camera Obscura at fighters and takes a picture; the flash momentarily stuns any fighters caught within the Viewfinder, leaving them vulnerable, and inflicts them poison damage, even after she disappears. If a fighter is within the Viewfinder, they can avoid the Camera Obscura's effects by shielding during the camera flash. Yuri disappears after taking three photographs.
Yuri also appears as a hostile Assist Trophy in the Spirit Battles for Reporter & Wrestler, where she fills in the role of the Reporter; Mio & Mayu Amakura, due to being from the Fatal Frame series; and Toy-Con VR Goggles, with her Camera Obscura's Viewfinder representing the goggles.