Ineffa is the first character to hail from Nod-Krai that will be playable.
Genshin Impact has dripped a new character in Ineffa, who will feature in the upcoming Version 5.8 update, likely as an introductory character to the upcoming Schnezhnayan sub-region, Nod-Krai, which will be introduced in Version 6.0.
Not much is known about Ineffa, as she has yet to be introduced in game, and does not seem to have interacted with any of the current playable characters. But judging from the various posts made by Genshin Impact about her character, Ineffa will be an Electro character, but the source of her elemental power is unknown. Other than that, her choice of weapon is unconfirmed, although by the looks of her character art, she may be privy to a polearm.
Ineffa is a robot, the third inhuman playable character in Genshin Impact after the Raiden Shogun and Wanderer. But Ineffa seems to not serve any lofty goal like housing a gnosis, becoming a weapon for war, or any of that sort. According to her introduction, Ineffa was made simply as a companion--but that doesn't mean her opinions and decisions aren't to be respected!
Ineffa is affiliated with a workshop called Clink-Clank Krumkake, which seems to be headed by a character called Aino. Although there may be some mysteries to Ineffa that are yet to be unearthed.