|Faction|| Schiff |
|Occupation||Sensor of the Schiff|
|Appearance||Blood+ Anime |
Blood+ Light Novel
|Japanese Voice||Megumi Toyoguchi|
|English Voice||Olivia Hack|
Created in a laboratory in Khirbet, Irène, along with the other Schiff followed Moses to fight for their freedom. They killed all the scientists and broke through to live their lives, but the Thorn impedes on their free lives. At first they were led to believe that Saya's blood is the only salvation from the Thorn and for that reason they hunted her down followed her up to Paris.
However, after Kai saves her from some thugs, Irène tells him how the Schiff came to exist, how they are dying from the Thorn, and why they keep attacking Saya. She also tells him that they think Saya's blood will save them. Due this, Kai offers to ask Saya.
However, the Schiff later came to attack Saya's group. Irène and Kai try to convince both sides to stop fighting because of their new friendship but to no avail. The fighting only stops however when Irène collapses from her progressing Thorn. After being convinced Saya finally agrees, although reluctantly, to feed her some of her blood, but it ends up killing Irène. Her body crystallizes in front of her comrades and her broken head finds its way to Saya's lap.
Her death is mourned by Kai, Saya and the Schiff alike. Realizing it's Diva's blood they really need, Irène's death is the precipice for the end of the hostilities between Saya's group and the Schiff.
Despite being one of the Schiff and a Chiropteran in race, Irène is gentle and forgiving. Unlike her companions, she is greatly bothered by the idea of killing humans to feed on them, refusing to do so despite it killing her at the same time from lack of blood.
She fights with a wide, double-sided sword.