Also known as: ロード・ディアーチェ, ディアーチェ・K・クローディア
One of the antagonists of Mahou Shoujo Lyrical Nanoha A'S Portable: The Battle Of Aces. Material-D, also known as King Ruler over Darkness and Lord Dearche is a "dark copy" of Yagami Hayate. She wields Yersiniakreuz, a copy of Hayate's Schwertkreuz, and the Tome Of The Purple Sky, a copy of Hayate's Tome Of The Night Sky.
In Mahou Shoujo Lyrical Nanoha INNOCENT, she is known as Dearche Kings Claudia and her resemblance to Hayate is merely coincidental.