|Stern the Destructor|
Unknown Age (Year 0067)
|Age (as of 0081)||Unknown|
|Magic Type||Eltria-Midchilda Mixed Hybrid|
|Magic Light||Mauve Purple|
|First Appearance||Magical Girl Lyrical Nanoha A's PORTABLE -The Battle of Aces- (game, 2010)|
|First Appearance (Chronologically)||Magical Girl Lyrical Nanoha Reflection (anime film, 2017)|
|Voiced by||Yukari Tamura|
Stern (シュテル) is an Ancient Belkan knight and one of the three Materials alongside their king, Dearche and their friend, Levi. Their soul was released from the Tome of the Night Sky and placed into a body conjured from Takamachi Nanoha's data by Iris.
As with the other two Materials, Stern's gender is presently unstated. While Stern's body came from a woman, Takamachi Nanoha, it has not been made clear (as of Reflection) that Stern would identify the same way.