A concept in Fate works originating from Takeuchi Takashi's fondness for his character design of Saber from Fate/stay night. As a result, many characters throughout the franchise are look-alikes resembling her, whether or not they were designed by Takeuchi.
This tag applies when at least 3 Saberfaces appear in a work, especially when they're grouped together. This doesn't apply to multiple variants of the same Saberface (i.e. alter servants), where dual persona or multiple persona should be used instead.
Saberfaces include:
Hippolyta has the same hairstyle as Artoria but different facial features, so she's not a Saberface.
Yamato Takeru was described by Takeuchi as a Saberface in an interview, but isn't considered one by Mysterious Heroine X or in Fate/Grand Order's gameplay mechanics.