|Name in Japanese||ドゥニ|
|Debut (Light Novel)||Volume X|
|Debut (Manga)||Eternal Song Chapter 03|
|Appears in||Light Novels, Manga|
|Title||"Bearer of Possessive Skin"|
|Contractor's True Name||"Fierce Wolf of Hacking"|
|Affiliation/s||Flame Haze Army|
|Color of Flame||█ Horsetail|
Denis is a tall man wearing a cloak which is his contracted Crimson Lord's Vessel, Lupin.
He speaks in polite manner, contrasting to Alex.
Denis is of French descent.
The war with Révolution takes his life, depressing Sophie enough to withdraw from battle.
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