Übel

During the First Class Mage Exam arc in Sousou no Frieren, Übel came out of nowhere and blew everyone away. She quickly became the series' most popular dark horse waifu because she was a completely insane third-class mage with a dangerously high kill count. The rest of the cast is busy studying traditional magic or protecting their friends, but she is just there to cut things up. She has this scary calm serial killer energy that catches everyone off guard. It is amazing to see her easily scare off experienced mages with just a twisted smile.

She really nails the slightly crazy gothic look. Übel has really messy green hair and eyes that look like they are dead and stare right through you. The anime community went crazy over her beautiful black halter dress, which is her signature look. Fans go crazy for her because she is both dangerous and cute at the same time. She uses cleaving magic that is way too strong and can cut through almost anything she can see. Her twisted empathy is what makes her so scary. She will actually learn other people's magic by really getting to know their darkest feelings. That incredibly dangerous but very charming personality makes her a top-tier waifu.

Übel makes for truly stunning desktop wallpapers because she has such a dangerous aura. Artists love drawing her crazy smile or catching her in the middle of a swing with her magical staff. There is a lot of beautiful fan art that shows off her dark style and crazy combat faces. An Übel background is a must-have if you want a beautiful, scary mage who might actually kill you while you watch.