Frieren
The main character of the amazing work of art Sousou no Frieren is Frieren. She is an elven mage who has lived for more than a thousand years. She first traveled with the Hero Himmel to defeat the Demon King. But unlike most fantasy stories that end after the last battle, her story is about what happens next. That legendary ten-year adventure felt like a short moment to her because elves see time so differently. Watching her go back over her steps decades later, trying to really understand the human feelings and connections she missed the first time, makes her one of the most interesting and emotionally powerful characters in modern anime.
Frieren is the best example of the beautiful, sleepy elf look. She has long white twintails, perfectly pointed ears, and a classically elegant white and gold traveling outfit. Fans can not get enough of her because her personality is a perfect blend of a wise old mage and a lazy kuudere. She is an incredibly powerful force of nature on the battlefield who kills demons without a second thought. But as soon as the fighting stops, she becomes a huge magic nerd who gets eaten by mimics all the time because she wants a random grimoire. She will not get up early, so her teenage apprentice Fern has to literally pull her out of bed. That huge gap between a legendary hero who saves the world and a lazy, socially awkward elf makes her the perfect waifu.
Frieren makes for truly god-tier desktop wallpapers because she is so beautiful and has so many meme possibilities. Artists love to draw her looking majestic while casting super strong magic or just sleeping peacefully in a field. There is a lot of great fan art of her with a sad smile as she thinks about Himmel or getting stuck waist-deep in a mimic chest. Having a Frieren background is a great way to show how much you love one of the best fantasy heroes ever.