That's my waifu! Nami from One Piece.
The source for this one is the cover art for Chapter 1113 of the manga. https://onepiece.fandom.com/wiki/Chapter_1113?file=Chapter_1113.png
That's Yoruichi Shihouin from Bleach, and the image is AI generated.
Seems you can find it for a good enough res on Pinterest: https://i.pinimg.com/1200x/c4/6a/b6/c46ab6a808f4aece997621a4cb43c9ca.jpg
Post itself is https://pinterest.com/pin/49610033391852554/
Seems to be an original character. Only instance of this art that I could find is Youtube user Gwahar's icon.
https://www.youtube.com/@Gwahar
https://yt3.googleusercontent.com/Xi3TPTCF_moxIbfMERPzZ4RP6vUhgusbCd78F8ENAqRnbar79QmM4NWZWHcWmjAqpPRPM9n5hw=s900-c-k-c0x00ffffff-no-rj
(You can edit the "s900" in the URL for any number you want and it'll display at a higher or lower res for you. The link I gave you has the icon at 900x900).
That's Kallik, from the new Avatar movie - "Avatar Aang: The Last Airbender".
And the source is this fan animation! https://www.instagram.com/reel/DdEjzJbtuOG/
Can't believe I'd see his icon here of all places!
Indeed Rosenne is right about the character and the source. There's a full version of the art on the Indiegogo page that you may be interested in too, although it's not as high res.
https://cdn.images.indiegogo.com/richtextimage/richtext/de894314-5604-46d2-a72b-4ea437f19b99.jpg
(Taken from: https://www.indiegogo.com/en/projects/sickfoxstudios/blade-devil-ghosts-of-the-past-graphic-novel#/section/project-story )
You'll find the Characters section after scrolling down past the comic.
Ashyara from Blade Devil: Ghosts of the Past. I haven't found an uncropped version online, the creator of the graphic novel (RagingGoldenEagle) uses this exact version as their [url=https://www.youtube.com/c/RagingGoldenEagle]YouTube[/url] icon. [url=https://yt3.googleusercontent.com/ytc/AIdro_nk_EvDhuZDJWdli2ZKKD6mTD5WdQYGTsB85NLtrZQTV7w=s900-c-k-c0x00ffffff-no-rj]Link to icon itself[/url]
[url=https://www.animecharactersdatabase.com/characters.php?id=134266]Athanasia[/url] from Who Made Me a Princess ([url=https://myanimelist.net/anime/57353/Mofa_Gongzhu_de_Xiao_Fannao]MAL[/url]) episode 11
Art of Kyaramel (VTuber) that they often use as their banner. Links: [url=https://x.com/KyaramelVT/status/1859224835181924830]Source[/url], [url=https://x.com/KyaramelVT]VTuber's Twitter profile[/url], [url=https://x.com/suneiruuu]Artist's Twitter Profile[/url]
Tofurin (VTuber). The image is their YouTube banner ([url=https://www.youtube.com/@tofuscatcafe]Link to Youtube[/url]). A [url=https://x.com/tofurinVT/status/2070819635692470699?a=Rj-lzUS4B5_JuSV8fc8&s=20]link[/url] to their post on Twitter/X crediting [url=https://x.com/hje16]the artist[/url], and the artist's own [url=https://x.com/hje16/status/2075192930701308400]post[/url] showing the art.
Avric from Sennen Sensou Aigis. As far as I can tell, it's a NSFW browser game. It previously had a global version that is no longer available, but it's still playable in Japan.
Here's the character on the wiki (SFW): https://aigis.fandom.com/wiki/Avric_(Platinum)