Jeanne d'Arc Alter is an Alter-type Servant representing a corrupted or reversed version of the historical Jeanne d'Arc. Unlike the original Jeanne who was willing to compromise, Jeanne Alter is far more uncompromising and tyrannical in her approach. Despite her harsh demeanor, she demonstrates unexpected depth, showing genuine care for those around her despite her ruthless exterior. She has a notable dynamic with Artoria Alter, and the two are frequently depicted together in fan works. Jeanne Alter appears in various Fate/Grand Order storylines, including the Shinjuku Lostbelt, where she demonstrates knowledge beyond her typical scope and maintains complex relationships with the protagonist and other characters. Her character represents the concept of corruption or reversal applied to historical heroic figures within the Fate universe.