Undine and Salamander

Undine and Salamander are Arioch's pact beasts. Though they are two separate beings, they form one consciousness. They took Arioch's womb as the price of their pact.

Undine
Undine is the water spirit of the duo.

Lore

Undine (ondine) is a water elemental that finds her origins in alchemy and as a fay water-spirit. It is notable that 'Undines are said to be able to gain a soul by marrying a man and bearing his child'.

Salamander
Salamander is the fire spirit of the duo.

Lore

Salamanders are often represented as fire elementals in fantasy or beasts with affinity with fire. These fantastical representations find their origin in the lore regarding the reptiles known as salamanders.

In-game Presence
The duo take the form of a circling presence. They are composed of a male and female voice; though they trade lines, there is no distinction between them. Instead they are represented as a duality of consciousness, opposing forces that join together to form completeness (not unlike the Daoist/Taoist philosophy of yin and yang).

The spirits are drawn by the madness dwelling within Arioch's heart. . The spirits destroy the Imperial prison she lay within and make a pact with her. Perhaps they have plans for her, perhaps they are simply cruel fey, or perhaps they enjoy her presence - either way, the pact was made.

It is interesting to note that both Undine and Salamander appear female.