Erza Knightwalker is a member of the Edolas Kingdom and serves as the Captain of the 2nd Magic War Division in the Royal Army. She is the Edolas counterpart to Erza Scarlet, with her counterpart's surname "Scarlet" replaced by "Knightwalker."
In contrast to her Earth Land version, Erza from Edolas is sadistic, cruel, and kills with a smile. Showing no sympathy towards her enemies, she has mercilessly slain over half of the members of Edolas Fairy Tail, earning her the title "Erza the Fairy Hunter." She takes immense pride in this moniker; thus, when Lucy mentioned that her Earthland counterpart was a loyal ally of the Fairy Tail Guild with unwavering loyalty to her friends, it deeply insulted Knightwalker. This revelation made her even more hostile towards Lucy, leading her to attempt killing Lucy by dropping her from a great height.
Knightwalker also places high value on her status as a Captain in the Royal Army. Being forced to kneel down by Charle severely wounded her ego. When Pantherlily informed her that Happy and Charle were rebels—and especially because Charle had tricked her moments earlier into revealing Natsu and Wendy's location by pretending to be Shagotte's daughter—Charle became her first target for elimination. However, her relentless fighting spirit has made her overly arrogant, and she doesn't handle defeat well. This was evident when Erza Scarlet managed to temporarily best her off-screen.
