|Skills||Attack, Dark Lightning|
|Locations||Modis Ruins, Endless Corridor, Farthest Garden, Sunlight Torrent|
|Item(s) Dropped||Mane, Fertilizer|
- "Dark black with bright red eyes. They're really demonic horses. Its horn is black too, but also kina shiny, so it might be really hard, like a metal."
- — Atelier Meruru description
Riotous Stallion's are a strong horse enemies encountered in Atelier Meruru: The Apprentice of Arland.
These horse-type enemies first appear at the Modis Ruins, and also appear in some of the surrounding areas such as the Farthest Garden and Endless Corridor. They also appear at the Sunlight Torrent, and attack in groups with the Flamare.
They are lightning based enemies who attack using a mix of physical attacks and lightning based attacks. They are a rather balanced enemy with high attack power and decent physical defense and speed.