One of the antagonists of [i][[Mahou Shoujo Lyrical Nanoha A's Portable: The Battle of Aces]][/i]. Material-L, also known as Assailant of Thunderblade ([i]雷刃の襲撃者 Raijin no Shūgekisha[/i]) and Levi The Slasher ([i]レヴィ・ザ・スラッシャー Revi za Surasshā[/i]) is a "[[dark persona|dark copy]]" of [[Fate Testarossa]]. She wields [[Vulnificus]], a copy of Fate's [[Bardiche (nanoha)|]]. 

It is speculated that Levi loves eating [[sweets]], especially [[lollipop|lollipops]]. But some fanworks depict her as a heavy eater, much like [[Saigyouji Yuyuko]] of [[Touhou]].

In [i][[Mahou Shoujo Lyrical Nanoha INNOCENT]][/i], she is known as Levi Russel and her resemblance to Fate is merely coincidental.
雷刃の襲撃者 レヴィ・ザ・スラッシャー レヴィ・ラッセル