![1boy 1girl alter_servant artoria_pendragon_(all) black_hair black_legwear blonde_hair card couple dark_persona dress facial_mark fate/hollow_ataraxia fate/stay_night fate/zero fate_(series) gothic_lolita hair_ribbon hetero lancer_(fate/zero) lolita_fashion mole mole_under_eye pantyhose playing_card ribbon saber_alter tongue yellow_eyes youaresober rating:s score:0 post #1079908](/cdn_image/preview/54/12/541211fd460999e11f565f1a8eedc6ee.jpg)
Theoretical fan-designed dark persona version of a character who has been corrupted by the mud of the Fuyuki Holy Grail from Fate/Stay Night, similar to canon examples like Dark Sakura or Saber Alter. Fan examples of "alters" include Archer Alter, Lancer Alter, or the "Sabatsugu" version of Emiya Kiritsugu (not to be confused with Emiya Kiritsugu (Assassin)).
Common traits of an Alter version of a character include white hair, red eyes or yellow eyes, pale skin, and visible red veins of corruption. Alter characters will also typically be dressed in an alternate costume with darker colors or stripes of black and red.