Undertale WallpaperDownload Undertale Wallpaper for free, use for mobile and desktop. Discover more Chara, Frisk, Iphone, Sans, Waterfall Wallpapers. Please rate this wallpaper. DOWNLOAD Undertale Wallpaper Image Size: 125 KB Image Name: undertale-16.jpg File Type: JPG 0 downloads in total. Tags:chara Wallpaper (10) - frisk Wallpaper (10) - Iphone Wallpaper (39539) - sans Wallpaper (10) - waterfall Wallpaper (10)