Iris

Iris "Ice eye" was the former no 8 (36) Claymore of the Organization. She was a defensive type claymore and the eye of her generation. Her skill, ice eye, involved manipulating the yoki of a target to freeze them. She was very close friends with Lenora and Viola.

Iris, along with Dinah, Lenora, and Viola were sent to hunt down Blanc. They encountered him but were easily defeated. Iris, hearing what Blanc whispered to her and charmed into thinking she loved Blanc, realized she wanted to follow him and tried to convince her friends about the truth she had heard. However, she was forced to kill Dinah when she was about to awaken and tearfully killed Lenora and Viola who attacked Blanc. She continued with Blanc to Tuwain where she practiced THUMA and become one with her yoki. She later realized she had become untraceable when a fellow warrior didn't realize her presence or attack her for deserting. Blanc took care of her, making her a dress out of high quality Rabonain-cloth. Iris began to fall in love with Blanc but didn't openly show it to him. Seeing the organization sending destruction squads to towns that didn't pay horrified Iris and made her disgusted to have ever been part of the organization. Blanc later took in 23 and taught him as well. Iris acted as his preparatory teacher before he could start THUMA training. He began to sense that Iris was in love and tried to confront her, only to be scolded harshly by her. Iris also began to realize that the only people who had ever been kind to her, the ones with true humanity, all had yoki in their veins. She went with Blanc to give Sullivan a body to stop him from killing to preserve his fearful reputation but was stabbed by Samara and had her body destroyed by the uncontrolled surge yoki created. Her soul survived and she didn't awaken since her soul was integrated with her yoki but her body was destroyed beyond repair. In the process, Iris reached true ascension. Blanc got Sullivan to successfully transplant her soul into Francesca's mindless body and give it Tanya's mind. In Francesca's body, Iris has no stigmata (because sullivan healed it) nor any aura.

It is likely that Iris is the one Faith is looking to kill, and that Icolde and Iris are the same individual.