Lagiacrus is a powerful and majestic creature featured in the anime series Monster Hunter Stories: Ride On. Known for its commanding presence and aquatic abilities, it is a formidable Leviathan class monster. Lagiacrus dwells primarily in the ocean and is feared by many due to its mastery over thunder attacks. In the series, Lagiacrus plays a significant role as a challenging opponent and a symbol of untamed nature. Its presence often tests the resolve and skills of the protagonists, who must overcome its strength to prove their prowess as riders.