Infinity Stones

Origin
The stones were create by the original six Celestials. They wanted to harness each of their abilities and put it into a solid form. Each stone represented a different member of the original six.

Space Stone - N/A

Mind Stone - Freya, The Celestial Warrior of the Mind and Free Will

Reality Stone - Jacob, The Celestial Warrior of Reality and Protection

Power Stone - Beyonder, The Celestial Warrior of Power and Might

Time Stone - N/A

Soul Stone - N/A

Upon the creation of the stones, the council began to worry of how powerful the items had become. They lacked the judgement of the individual Celestial Warrior and could be used for evil purposes. The council agreed to hide the stones so they could never be misused. They worked with The Oracle, the Celestial Warrior of Spells and Prophecy in order to enchant the stones to stay hidden. With the spell, The Oracle saw a dark future where an event called Ragnarok would occur, signals the collection of all six stones and the possible end of life as we know it. Ragnarok will begin with all six Celestial Warriors are killed by others in search of the stones. The stones will have guardians, ones the stones trust to share bits of their power. During Ragnarok, these guardians will be killed, assembling the six stones and bringing ultimate power never seen before.

With this powerful agreement and magic, the destiny was sealed. The spell being so power, The Oracle was destroyed. Madame Web took her place. The six Celestial Warriors agreed to go into hiding, with some renouncing their Celestial responsibilities in order to fully protect themselves and to prevent Ragnarok.

Space Stone
The stone was used to cut off the world from the rest of the universes. This was to keep the machines in and from escaping. H.A.D.E.S. wants the stone to escape and find more food.

Hidden with The Cut

Mind Stone
Original Creator: Freya

Freya originally created the stone to weaponize her powers over the mind. She forged the stone and placed it in a sceptre so it can be used by her son, Baldur. She wanted him to be her champion and to fight her battle in her name. Baldur began to misuse the power though and would start unnecessary wars. Freya, seeing the stone being misused, was forced to use her power on her son, and forced him to give up control of the sceptre. After the Ragnarok prophecy, the stone was hidden from the Celestials, including Freya. Freya, wanting to protect her son from her eventual death for Ragnarok, relinquished her Celestial powers so no one could detect her power. Freya eventually began to miss the power she once had and went in search of the stone, locating its power in Midgard.

The Oracle's spell had risen The Valkyries from the dead to protect the stone. The Valkyries were once the protectors of the Nine Realms, but were once slain in battle. The Oracle's power brought them back to life and made them the selfless guardians of the stone. They stood in their temple waiting for any challenger. The day came when Baldur tracked down the stone. Being a Celestial Warrior, he was able to take on the Valkyries defeating them all. He took the Mind Stone and used its power to enslave the Valkyries to be his personal warriors.

Midgard: The Valkyries

Reality Stone
Original Creator:

Hidden within Jakku with the Labyrinth

Power Stone
Original Creator: Beyonder

The Phoenix Force's source of power

Time Stone
Original Creator: N/A

This stone was created

Dathomir

Soul Stone
Original Creator: N/A

Titan: The Valley of Souls

Inhabitants of the Soul Stone

-Orson Krennic

-Starkiller