Kyryll Chudomirovich Flins is a Lightkeeper of Nod-Krai, lone guardian of the lighthouse and graveyard on the Final Night Cemetery. Though appearing enigmatic and cold, he is a cultured and courtly gentleman, and one of the last of the Snowland Fae still in Nod-Krai. Flins uses the tall male model. He has a very pale skin, yellow eyes without pupils with dark circles on his lower eyelids, and dark blue hair with light blue tips, in a choppy and short haircut, except for a long section at the back of his head. Is about 600 to 700 years old

Aether is a teenage-looking traveler with bright blonde hair in a long braided ponytail, golden-yellow eyes, and fair skin. He wears an exotic outfit with a dark brown midriff-baring vest, white scarf, two-tailed cape with gold embroidery, and a tasseled earring on his left ear. He is an interdimensional traveler searching for his lost sibling, Lumine, across the nation of Teyvat after being separated by a mysterious god.

Paimon is the cheerful, small, fairy-like mascot and guide who accompanies Aether across Teyvat. She is characterized by her floating, white-haired appearance, star-themed outfit, and high-pitched voice, often referring to herself in the third person. Paimon is known for being greedy, food-loving, and loyal, despite her fear of combat.