Tignari, Syno, Colley, Paymon

The Seven Archons are the divine rulers of the seven regions of Teyvat, who came to power after the Archon War two thousand years ago. Each Archon is associated with a specific element and ideal (freedom, contracts, eternity, etc.) and wields an artifact—the Heart of God—that allows them to resonate with Celestia. At the start of the game, for example, Barbatos (Anemo, Mondstadt) and Morax (Geo, Liyue) are alive. The regions of Teyvat—Mondstadt (Anemo), Liyue (Geo), Inazuma (Electro), Sumeru (Dendro), Fontaine (Hydro), Natlan (Pyro), and Snowy (Cryo)—each have a unique appearance shaped by the ideals and element of their Archon. Currently, the Archons behave like ordinary people or rulers. Venti (Anemo, Mondstadt), Zhongli (Geo, Liyue), Raiden (Electro, Inazuma), Nahida (Dendro, Sumeru), Furina (Hydro, Fontaine), Mavuika (Pyro, Natlan), and the Queen (Cryo, Snow). There's also the region of Nod's Edge, whose "archon" is the harbinger Columbine, goddess of the moon.

In Teyvat, the God's Eye is an artifact bestowed by the Archons upon the chosen few: it allows control over one of the seven elements (Anemo - air, Geo - earth, Electro - electricity, Dendro - life/plants, Hydro - water, Pyro - fire, Cryo - ice). The wielder can imbue objects with energy (infusion), create shields, attack with the element, and even shape it. Combining elements triggers elemental reactions: for example, Pyro + Hydro = Steam (increased damage), Cryo + Hydro = Freeze, Electro + Pyro = Overload, and others, adding tactical options in combat.

Fatui is a military-diplomatic organization from Snezhnaya, led by the Harbingers.

Harbingers of Fatui:

Pierrot "The Jester" (No. 0) is charismatic, calculating, and far-sighted.
Capitano "Captain" (No. 1) - valiant, unyielding, faithful to duty.
Dottore "The Doctor" (No. 2) - a mad scientist, cynical, obsessed.
Columbine "Soubrette" (No. 3) - mysterious, playful, unpredictable.
Harlequin "Servant" (No. 4) - cold, fair, domineering.
Pulcinella "Chicken" (No. 5) - cunning, practical, influential.
Scaramuccia "The Storyteller" (No. 6) - hot-tempered, arrogant, cunning.
Sandrone "Marionette" (No. 7) - detached, mechanical, emotionless.
Signora "Dama/Rosalina" (No. 8) - arrogant, cruel, elegant.
Pantalone "The Businessman" (No. 9) - greedy, calculating, ambitious.
Tartaglia "Child" (No. 11) - passionate, courageous, unpredictable.

Lumine and her brother, Eater, are twins from a supposedly royal family, with Lumine the younger. The heroes traveled through the worlds and found themselves trapped in Teyvat by the Unknown Goddess, who refused to let them leave. She separated the twins, taking one with her and putting the other into a deep sleep.
Lumine's goal is to find Eather. Together with her guide, Paimon, she travels the world of Teyvat, hoping, at Paimon's suggestion, to meet with the seven Archons and find her lost twin.