Claw Ymir

Claw "Max Brillant" Ymir (かぎ爪マックスブリリアントのユミル - kagidume makusu buririanto no yumiru) is one of Pallasites Third Class at the service of the goddess Pallas, is the twin sister of Methone , with his brother have a mission to eliminate the Saints to protect Athena both attack Yuna in Jamir.

Personality
Ymir is a woman of strong personality and loyal to their goddess Pallas. She herself says that she is a proud Palasiana with his brother and they both sacrifice their lives to defend their goddess and the Saints do with Athena.

She is quick certainty and when he fights and does not hesitate to bidding to prompt removal of an enemy.

Assault Jamir
Ymir with his brother Metone in a field of flowers in Jamir, when Yuna  and Raki were there. Both are presented as Pallasite the service of the goddess Pallas sent to exterminate the Saints of Athena, and intend to do so attacking Yuna who at that time was not able to use his cloth in case of his heart. But when Metone have to kill Yuna. Pegasus Kōga intervenes, attacking her with his Pegasus Ryusei ken. Ymir able to be reinstated in a short span of time and they are quick to fight back together, but now Yuna clears the doubts of his heart to ignite the desire to protect Raki and blocks combined attack, wearing his cloth, ready to face. Sōma  also comes at that time and they fight with the twins, leading to defeat them at the moment. That done, Ymir and Methoni is teletránportan away.

Claw "Max Brillant" Methone betrayal
When the Saints invade Pallas Belda, Ymir traced to Sōma and Yuna and just inform his brother, so that they can avenge their previous defeat. However, when they come to find their opponents, Methoni - wishing to become stronger - employed by surprise black hourglass "Anti-Limit" on his sister. It sees with terror power being absorbed by his twin and died after the operation.

Once Methoni defeated by the Bronze Saints, the latter sees his sister lay on him to make him pay for his act. However, it is unclear whether this is a hallucination or defeat caused the "liberation" of Ymir.

Trivia

 * Her namesake, Ymir, was the oldest of the frost giants in Norse Mythology, created by the meeting of a region of ice and a region of flame. Ymir was ultimately murdered by his grandsons, who used his immense corpse to create the Earth. Ymir's skull was used to create the sky.
 * Ymir is also the names of one of Saturn's moons.
 * Ymir's Chronotector has images of the number 3, showing her Pallasite Class.