One of the antagonists of [i][[Mahou Shoujo Lyrical Nanoha A's Portable: The Battle of Aces]][/i]. Material-S, also known as Starlight Destroyer ([i]星光の殲滅者 Seikou no Senmetsusha[/i]) and Stern The Destructor ([i]シュテル・ザ・デストラクター Shuteru za Desutorakutā[/i]) is a "[[dark persona|dark copy]]" of [[Takamachi Nanoha]]. She wields [[Luciferion]], a copy of Nanoha's [[Raising Heart]].

In [i][[Mahou Shoujo Lyrical Nanoha INNOCENT]][/i], she is known as Stern Starks and her resemblance to Nanoha is merely coincidental.
シュテル・ザ・デストラクター 星光の殲滅者 シュテル・スタークス