Larxene

Larxene (ラクシーヌ, Rakushīnu?) was first introduced in Kingdom Hearts: Chain of Memories where she conspired with Marluxia to overthrow Organization XIII by using Sora. She has a cruel, sadistic personality and enjoys seeing others suffer. Larxene wields eight knives, four in each hand, and the power of thunder to fight, and is known as the "Savage Nymph" (非情の妖姫, Hijō no Yōki?, lit. "Callous Vixen"). She is agile and can call forth bolts of lightning in battle. Larxene is voiced by Rieko Katayama in Kingdom Hearts: Chain of Memories and Yuko Miyamura and Shanelle Gray in the Japanese and English versions of Kingdom Hearts Re:Chain of Memories, respectively. In Chain of Memories, she first introduces herself to Sora by forcing him to take in the false memories implanted in her to remember Naminé's name. She then taunts Vexen after his replica of Riku failed in his mission before Marluxia charges him with incompetence. After she discovers Axel's betrayal and sees that her and Marluxia's plans have fallen apart, her playful manner vanishes as she decides to personally kill Sora. But after knocking Naminé away from her, Larxene is perplexed that Sora was intent to protect her in spite of learning the truth as she dies at his hands in the end with help from Donald Duck and Goofy (Source: Wikipedia)