- WARNING - (PRETTY MUCH SPOILERS BELOW) - WARNING -Happy Halloween, humans and monsters alike!I've never really done anything for Halloween before, but as soon as this idea came to mind I just could not let it go. It just felt too perfect.So here's some in-battle sprites for the ultimate evil of the Undertale universe!I first only had the Demon + Flowey idea in mind and then it evolved into much more as I was working on it!Well then, I hope that you either like it or get terrified by it ^^Enjoy!Here's a link to the sprites by themselves - imgur.com/ZqidiaM Also something extra if you're interested - imgur.com/KTrzf3G Undertale and all its characters (C) Toby FoxSprite Art made by me.