Anastasia is the mascot of the brand of the same name, she also appears as a playable character in Kuutei Senki, nicknamed "Nasu" (ナス) by Gowen. Greatly annoys Shade, Gowen's second-in-command.

In newer Eushully games, she appears as a maid mascot and often a bonus playable character in her humanoid form. In many of these games, her bat-like purple form appears as "Chibi-nasu", often as an enemy monster.