Agnes, Ouroboros lady

Intertwined in an infinite loop with Auran, is his female companion Agnes:

• Ag = Argentum (Silver), for her grace and virtues...
• Ne = Neon, for her quiet and serene nature...
• S = Sulfur, for the hidden fire she can release if provoked.

Just like Auran, Agnes is an Ouroboros too... sharing similar powers and even some personality traits as well. Some might think they are brother and sister or relatives, but they are not! Although they are still very close in a way, more than they like to think as they are endlessly drawn to each other...

Agnes is 1,75m tall, with a long, prehensile tail that is 3,20m long. The tail of an ouroboros keeps growing throughout their entire life, so much so that as the limbs get weak with age, some ancient ouroboroses may even forgo walking completely and move by slithering on their ever-growing tail instead.
She can flicker and extend his forked tongue outwards up to 30cm. An Ouroboros has full control over their digestive system: she can thus use her stomach as "internal storage" to trap things, friends and foes alike since her insides are much bigger than what can be seen from outside, and can swallow anything that is approximately her own size. If she ingests a creature, she can absorb it to gain a similar shape and some of its abilities, until she reforms and safely expels said creature from her body.

Additionally, any ourboros can alter their body when exposed to the pure essence of an alchemical element, adapting to it and gaining new abilities for up to a day, or for as long as they remain exposed to that element. Many ouroboroses strive to discover and unlock all their hidden elemental forms: they believe that only after experiencing all possible alchemical combinations within themselves they can become one with the universe and ascend to a higher self...