Jeanne d'Arc Alter (ジャンヌ・ダルク・オルタ?), Class Name Avenger (アヴェンジャー, Avenjā?), is an Avenger-class Servant summoned by Ritsuka Fujimaru in the Grand Orders of Fate/Grand Order. She is also a boss-only character under the Ruler-class during the events of the Orleans Singularity.