The Survey Corps emblem is a timeless choice. WallpaperAccess features several variations of the logo on dark or textured backgrounds that look sharp at 1920x1080.
If you prefer a cleaner look that doesn't distract from your desktop icons, consider minimalist designs focused on the series' iconography. 1920x1080 Shingeki No Kyojin HD Wallpaper">
For a high-impact background, look for cinematic frames that highlight the scale of the Titans against the human characters. The Survey Corps emblem is a timeless choice
Shingeki no Kyojin Wallpaper 4K, Eren Yeager, Mikasa Ackerman, 5K 4K Wallpapers 1920x1080 Shingeki No Kyojin HD Wallpaper">
Nothing says Attack on Titan like the iconic image of the Colossal Titan peering over Wall Maria. You can find high-quality renders of this scene at WallpaperCat . Minimalist and Symbolic Options