Iron Mask
The Iron Mask was a piece of headwear belonging to the mysterious Man in the Iron Mask.
The man was a prisoner during the reign of Louis XIV of France, and despite the amount of research done, the mask has supposedly never been found. However, in 1794, during the French Revolution, a Cult of the Iron Mask arose in Franciade. The Assassin Arno Dorian investigated, and was able to recover the keys to a hidden chamber containing the Iron Mask, which he kept.
Behind the Scene
In the database, Shaun Hastings claimed that we all know the identity of the Iron Mask and that he died during the sinking of the Titanic. It is a reference to the actor Leonardo Dicaprio who both played the lead role in both the 1997 film Titanic and the 1998 film The Man in the Iron Mask.