Beriorosu is a large, saber-toothed wyvern in the Monster Hunter Stories series, known for its agility and ice-based attacks. Unlike human characters, Beriorosu is a monster and does not possess a family name. In the game, Beriorosu can become a Rider's Monstie companion, providing players with powerful ice abilities and enhanced mobility across icy terrains. Its striking appearance and formidable combat skills make it a valuable ally in battles, and it plays a notable role as both a challenge and a partner within the game's world.