Larxene

Larxene is a member of the original Organization XIII and a current member of the “true” organization. Larxene is vicious, sadistic, and violent. Similar to Marluxia, she often expresses her cruelty by taunting others, shown on multiple occasions when she taunted Sora on the floors of Castle Oblivion about not remembering Namine. In battle, Larxene wields  a series of small throwing knives that she holds between her fingers like claws, and she also has power over the element of lightning. Larxene has been shown as a powerful and vicious opponent in battle, able to strike quickly and mercilessly as well as teleporting to her enemy and attacking with little time for them to react. During the events of Kingdom Hearts 358/2 Days and Kingdom Hearts: Chain of Memories, Larxene was a nobody, created after she lost her heart at an unknown time and place. It is to be assumed that in Kingdom Hearts III she has returned to human form. While it has not been officially confirmed, it has been heavily implied that Larxene's original human persona was a girl named Elrena, a member of Ava's Dandelions in Kingdom Hearts Unchained X.