Arca Yroca was a male human who worked as a jockey, riding fathiers at the racetrack located in the city of Canto Bight, which itself was on the planet of Cantonica. Around 34 ABY, he participated in a race riding Kessel Runner, the fathier of crime lord Sturg Ganna, and another riding the fathier Hoth Stuff.
As a jockey, the male human Arca Yroca was employed on the planet of Cantonica during the war that pitted the First Order against the Resistance. He took part in several fathier races at the racetrack of Canto Bight all in the same night circa 34 ABY.
Yroca was in the first post position riding Kessel Runner, owned by the crime lord Big Sturg Ganna, in the fifth race of that particular night. In another race, the jockey rode Hoth Stuff, using an electrocrop to whip the creature. Not long after this race, Finn and Rose Tico, agents of the Resistance, freed all the fathiers housed in the racetrack's stables.
The film Star Wars: Episode VIII The Last Jedi, released on December 15, 2017, featured the first appearance of Arca Yroca. Although the character was unnamed in the film itself, he was identified in Star Wars: The Last Jedi: The Visual Dictionary, a companion book by Pablo Hidalgo released alongside the film.