Irene

Claymore number three (before Priscilla number two) of the 77th generation, she is known as "Quick Sword Irene", capable of lashing out innumerable lightning fast sword strikes by accumulating all her Youki energy in her sword arm.

spoiler hiddenEven thought she was considered dead by the Organization, she merely lost an arm from the encounter with the Awakaned Priscilla. She saves spoiler hiddenClarespoiler hidden from spoiler hiddenOpheliaspoiler hidden and teaches her the Quick Sword technique. Irene gives Clare her right arm, so she can control her technique better. After Clare leaves her shelter, spoiler hiddenRafaelaspoiler hidden appears and kills Irene.