The power of a stasis archon is unstable as already mentioned numerous times. Most would expect an Archon to have full control over, but that is not the case.

Since they are originally fragments of Ekyia, it also means their bodies are not entirely complete. Trying to split up a sovereign dragon's power up evenly and stably, is almost impossible and comes with complications.

Thus, each archon struggles to contain their power and the will power of Ekyia who seeks to be put back together.

Barika - Found by Neuvillette, when she was small hatching her powers were unstable. She was causing rivers to flow backwards small whirlpools and even the fountains overflowed. Neuvillette and Furina were on the case to figure out why, and that's when he found Barika.

Her stasis hydro was having spasms and outbursts, so he quickly suppressed them and sealed half of her power away. Her sealing sigil is actually found in her eye, giving one of her eyes a gold amber look.

The opposite of Furina's unique eye colors.

Kaval - Aitne was the one who sealed half of his powers away. It happened when they first met and when he followed her around for a while.

His is on the back of his hand and sadly with Aitne gone, the sigil is slowly fading away and getting weaker. Kaval does talk to Silver about it and tries to help her find the sealing power, so she knows how to use it just in case she may need to use it.

Summer - she doesn't know who sealed some of her power away, but she thinks it was possible Durin. Her sigil is on her back between her wings and is holding strong.

The only other person who is aware of it is Albedo, since she told him and asked that he would look into it. With Albedo's help, he can keep the sigil intact and steady to ensure she doesn't lose control.

Huangyun - Madam Ping is the person who sealed his power. His sigil can found on his palm and he regular visits her to check the integrity of the sigil.

Kalinda - According to her memory, it was Makoto who sealed half of her power with Ei and Miko making sure her sigil is okay.

Her sigil can be found on the side of her thigh.

Tariks - His sigil is located on the nape of his neck, supposedly also placed by Apep at some point.

Each Sigil looks like tattoo and they are all the same design, with some unique patterns related to their element.

For example, Tarik's has the stasis logo with some vines and thorns around it, giving a floral pattern. Summer has wings and feathers, Kalinda has lighting bolts, and so on.

The stasis archon don't remember much of their birth or origin, all except for Barika who somehow has some memories retained from her original creation.
She keeps this fact and secret to herself, since she doesn't want the others to feel out of place.

However, since she remembers this puts a target on her back and the Tsarista had sent multiple people to spy, or talk to her when she is by herself. Despite, Barika has sent her letters saying she will keep her silence about it.

Barika can recall everything from when she was first made, and could recall the others being creatures and each one marked specific number on their body. This does mean she knows where the secret lab is, but she refuses to tell anyone else.

The reason for her sworn secrecy is to protect Fontaine, but also she is not sure how the others will react to tell them they are technically not alive. Their bodies are all manufactured with some taking the body of others who didn't live past birth.

This goes for Barika where her body is technically not hers. It belonged to a sovereign dragon that didn't make it past birth and was a still born. How, Tsarista got her hands on it is another mystery but the current Barika's spirit took over the body.

Barika feels like she isn't the real Barika, but rather an echo of her and impersonating her.

She heard Ekyia's voice the most often demanding and begging to be put back together, unity, reform, and so on.
Although, she does a good job keeping herself focused and sane. Furina usually can detect something is off with her sometimes. Especially when Barika's zones out, or has a glossy eyed look. Although the most notable detail is as time goes on, Barika's eyes tend to look dull and she looked very tired or emotionless like a puppet.