Players will fight Mohg, Lord of Blood in the end of the story of Elden Ring.

Gideon said Mohg kidnapped Miquella and is trying to establish a new dynasty.

Here, a native Japanese explained the lore of Mohg, taking the Japanese backgrounds into consideration.

目次 (Contents)

A Child of Marika and Godfrey
The Purpose Is to Establish a New Dynasty
Miquella Manipulated Mohg?
Postscript

A Child of Marika and Godfrey

Mohg is a child of Marika and Godfrey.

In addition, the text of Mohg’s Great Rune indicates Mohg and Morgott are twin brothers.

Mohg’s Great Rune
Mohg and Morgott are twin brothers, and their Great Runes are naturally similar.
But Mohg’s rune is soaked in accursed blood, from his devout love for the wretched mire that he was born into far below the earth.

The text of Regal Omen Bairn indicates Mohg and Morgott were omen babies and how they were treated.

Regal Omen Bairn
Omen babies born of royalty do not have their horns excised, but instead are kept underground, unbeknownst to anyone, imprisoned for eternity.
These memorial fetishes are fashioned in secret.

So, Mohg has been ostensibly dead and imprisoned underground.

The Purpose Is to Establish a New Dynasty

Mohg used White Mask Varré to kill maidens of Fingers.

Varré
Mm, yes, who would have it any other way? Now, take this. For your final trial. Soak the cloth with a maiden’s blood. Normally, this ritual would involve killing one’s own maiden, and recanting the wisdom of the Two Fingers. But since you are maidenless, the blood of anyone’s maiden will do.

The reason why Mohg eliminated the maidens is to establish a new dynasty isntead of Two Fingers, as described in the text of Pureblood Knight’s Medal.

Pureblood Knight’s Medal
Proof that one is a glorious knight of the new Dynasty of Mohgwyn that the Lord of Blood will inaugurate.
Use to be granted audience with Mohg. Only, it is not yet time.
For Mohg yet slumbers beside the Divinity.
Be Patient. The new dynasty is nigh.

The “Divinity” refers to Miquella.

Besides, the text “For Mohg yet slumbers beside the Divinity” refers to the mohg’s transfusion to Miquella, as mentioned in the text of Lord of Blood’s Exultation.

Lord of Blood’s Exultation
Render up you offerings of blood to your Lord. Drench my consort’s chamber. Slake his cocoon’s thirst. His awakening shall herald the dawn of our dynasty

But why was Mohg giving Miquella a blood transfusion?

Miquella Manipulated Mohg?

Miquella would have manipulated Mohg to give a blood transfusion.

Miquella tried to establish another Erdtree but have not achieved it yet because of the lack of blood.

Haligtree Knight Armor
Its left breast is emblazoned with the crest of the Haligtree. Though watered with Miquella’s own blood since it was a sapling, the Haligtree ultimately failed to grow into an Erdtree.

In addition, Malenia‘s dialogue below indicates Miquella can manipulate others.

Malenia’s Armor
Malenia awaited Miquella at the foot of the husk.
“My brother will keep his promise. He possesses the wisdom, the allure, of a god—he is the most fearsome Empyrean of all.”

The text of Bewitching Branch indicates Miquella can compel others to love him.

Bewitching Branch
The Empyrean Miquella is loved by many people. Indeed, he has learned very well how to compel such affection.

So, Miquella would have compeled Mohg to love him and give a blood transfusion in order to collect Mohg’s blood and create another Erdtree.

For example, the text of Remembrance of the Blood Lord indicates Mohg loved Miquella.

Remembrance of the Blood Lord
Wishing to raise Miquella to full godhood, Mohg wished to become his consort, taking the role of monarch. But no matter how much of his bloody bedchamber he tried to share, he received no response from the young Empyrean.

From these points, Mohg was probably manipulated by Miquella.

Postscript

This article explained the lore of Mohg.