Sans’ battle in the genocide route is by far one of the coolest fights in Undertale (also kinda depressing lmao). 

I mean, right off the bat, he doesn’t pull any punches, and it’s surprising considering how much of a laidback kind of guy he is. For all his corny jokes, and easy going, friendly attitude, he can be pretty damn intimidating, and a badass to boot. 

Even with a big ‘ol smile plastered on his face, the guy’s got no chill whatsoever, and that’s one of the reasons he’s easily my favourite character.