Yu is a fictional character from Arknights, the tactical mobile game and anime franchise set in the world of Terra. He is a supporting character associated with the Yan storyline and is known for his calm, dependable presence. Yu appears as part of the cast connected to the Dossoles and later regional narratives, often serving as a grounded figure amid larger conflicts. His role in the series is typically to support the main cast and contribute to the setting’s cultural and political atmosphere.