Here is Nightmare Sans, a shimeji from the Undertale shimeji pack. It will move around on your screen and interact with browser windows while you are browsing the web. Install the Shimeji Browser Extension for Google Chrome and download Nightmare Sans below to get this little Undertale character on your desktop. Visit Shimeji Directory for more characters.
Do you want to customize Nightmare Sans or create your own shimeji?
Open Nightmare Sans shimeji template in the Shimeji Editor