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AppearanceEditMercym is a large muscular Noah that is always seen wearing sunglasses, and has dark spikey hair, that resembles Road's hair style and a goatee. He, like all Noah, has the seven cross-shaped stigmata on his forehead.
Mercym has not been seen speaking much yet, but has been shown giving off a vaguely mocking aura. He appears as a rather relaxed individual.
The Rewinding Town Arc Edit
Mercym is presumably there at the family reunion with the other Noah among the shadowed silhouettes.
Third Exorcists arcEditHe was first seen greeting Wisely with the rest of the Noah Family, at his awakening of becoming a Noah. Wisely calls him by his noah name.
Mercym appears with Tyki Mikk and Sheril Kamelot to challenge Allen Walker, Tokusa, and the group in Jordan. When the Exorcists are backed into a cave, the Noah break into the cave, with Mercym kicking Allen Walking. He then stays here challenge Madarao while the other Noah take the ark to go the the North American Branch. He eventually defeats his opponent him, the anime showed them clashing fists and magic. Mercym was then seen standing in the middle of a plateaued desert, presumably keeping an eye on Madarao as the Third transformed while being taken over by the hatred in Alma's cells within his body.
In the aftermath, Mercym is retreating along with his fellow Noah holding unconscious Madarao on his shoulder.
Searching for A.W. arc Edit
When Feedler informs Tyki that Apocryphos has been captured, he mentions Mercym, Jasdevi and Sheril as those who managed to do this. As Tyki and the others loose track of the earl and take a lot of time to go after him, The Noahs start to get bored... To spend time, Mercym watches the twins fooling around while drinking some cofee. 
Natural abilities as a Noah: Like all Noahs, Mercym too has absolute command over all the Akuma, as well as destroying Innocence by simply touching it. All of his abilities, like other Noah, are based on Dark Matter. As a Noah, he is immune to the Akuma blood virus, which is normally fatal to the human's touch.
- Enhanced Strength: He has displayed a good amount of strength, being able to easily kick away a parasitic-type point breaker exorcist like Allen Walker.
Major Battles Edit
- Mercym, Tyki Mikk and Sheril Kamelot VS Allen Walker, Tokusa and Madarao.
- Mercym VS Madarao.
- Mercym, Jasdero, David and Sheril Kamelot VS Apocryphos.
|The Noah Family|
|Noah:||The Earl of Millennium • Road Kamelot • Tyki Mikk • Skinn Bolic • Jasdevi • Lulu Bell • Nea Walker • Sheril Kamelot • Wisely • Tryde • Feedler • Mercym • Mightra • Allen Walker|
|Akuma:||Mana Walker • Claire • Leo • Pierrot • Eliade • Eshi • Thread • Chomesuke • Lesley • Alma Karma • Mimi • Doug • Ice • Pang • Kazekiri • Sara • Doug • Sophia • Wizard Akuma • Rabbit Akuma • Level 3 (Paris) • Level 4 (Headquarters) • Level 4 (Paris)|
|Other:||Dark Matter • Noah's Ark • Cell Roron • Lero • Teez • Akuma Egg • Skull • Brokers • Golem|