10 Secretly Powerful Video Game NPCs

This classic Undertale character played a big part in the narrative of Toby Fox's game, and became an inescapable meme that carried Undertale to every inch of the internet.

Still, very few people expected him to be as powerful as he was.

You encounter the goofy skeleton Sans in the game’s opening hours. He certainly makes an impression, but ultimately comes across as a harmless companion. However, while he’s mostly smiles and fun in regular playthroughs of the game, he becomes notoriously tough if you enter a genocidal "kill everyone" run.

Slaughtering your way through the indie title is a surefire way to get into the firing line of the infamous Sans boss battle, where you’ll soon start breaking your controller in frustration over its immense difficulty. You'll need reflexes like a cat to avoid his special attacks, which fill the battle screen with bones, Gaster Blasters, and more. He can also dodge your attacks as he's self-aware and even knows about your resets.

Not too bad for the guy everyone thought was a simple joker.