Dehya is a mercenary that works for The Eremites in Genshin Impact. Not much has been officially revealed regarding her, but there are plenty of leaks to cover. For starters, she's been leaked as a Pyro Claymore user (although her rarity still hasn't been confirmed).
The following leaks aren't as extensive compared to somebody like Tighnari for the main reason that she isn't supposed to be playable any time soon. But that doesn't mean they're barren. Just keep in mind that content shown in leaks is subject to change.
The above clip comes from the official Sumeru teaser that Genshin Impact's official YouTube channel posted back on August 10, 2022. Dehya's involvement in it was minimal, but the clip does feature her appearance in motion, which is something some of her fans might wish to see.
It also seems to confirm the earlier leaks of her using a Claymore.
Dehya isn't playable in Genshin Impact 3.0, so there haven't been any substantial leaks on her abilities and general gameplay. The above video is just a "microwave render," but it can still give readers a general idea of how she will look in the game once she is playable.
Release date leaks are a bit vague at the moment, but leakers are currently stating that she won't be playable before Genshin Impact 3.4. Hence, she should be playable sometime in Version 3.4 or beyond. The rarity part of the second tweet is also relevant for the next section since different leakers have reported different information regarding her rarity.
The Twitter account is no longer around, but the above Reddit post has archived Uncle Lu's tweet. It basically stated that Dehya is a 5-star character, which contradicts what the next leaker said.
Obviously, she cannot be both a 4-star and a 5-star unit,
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