SCP-682 VS Sans

Description
''Two ridiculously hard to beat monsters that defy reality go toe-to-toe! Will the Hard-To-Destroy Reptile meet its match? Or is Sans completely boned?''

Interlude
Most monsters and enemies in general are relatively easy to beat, like your everyday Goomba or Waddle Dee, and don't have much supernatural prowess. However, some of these monsters are not only capable of casually screwing with the fabric of reality, they're also ridiculously hard to pt down. This, of course, refers to guys like: And its about time to compare their weapons, armor and skills to find who would win a Death Battle!
 * SCP-682, the Hard-To-Destroy Reptile.
 * Sans, the arbiter of the Underground.

SCP-682
All across our universe, since the dawn of time, there is an abundance of anomalous and all-out weird... items and creatures, for lack of better terms, that ignore the conventional rules of reality. Each has their own strange property that defies the laws of the universe. They range from objects and items like a talking box that insults those around it to an uncalled for degree and a sculpture that moves whenever no one's looking at it, to creatures like a masked doctor that creates zombies and a tall ape-thing that kills whoever sees its face. In order to try to keep these... things in check, the SCP Foundation was created to find, secure and contain them from the public eye, and from the world in general. Called SCPs, most of these anomalous objects aren't necessarily hostile or try to cause harm, but some are definitely more... violent than others, and/or are much more dangerous. They usually are destroyed instead of merely contained, but most of these violent and extra dangerous SCPs also happen to be resilient to damage, pain, and death in general. And no other SCP anomaly is more hate-filled, dangerous and more resilient than SCP-682, AKA The Hard-To-Destroy Reptile.

(*Cue: Monster (Instrumental) - Skillet*)

Not much is known about the hatred-filled, vaguely reptillian creature known as SCP-682, other than he is supposedly older than the Earth (by his own account, he's been around since the dawn of time). Even SCP-343 - God himself - claims that he is "not one of his own", implying that SCP-682 is some kind of glitch, and/or is from some other dimension/universe. What we know for certain is that he hates all life, particularly people.There are three classes of SCPs: Safe; pretty self-explanatory - items and/or creatures that cannot or do not want to harm people in any extreme way. Euclid; Items and creatures that can harm people around them, but either do not wish to or have a clear/small limit on what they can do. Then, there's Keter; Items and creatures that could potentially eradicate the entire human race, or even destroy the planet itself. Considering its capabilities, it's no wonder why SCP-682 is near the top of the Keter list.

Sans
Many eons ago, monsters and humans once lived in complete harmony. Literally no racism or prejudice going on whatsoever. However, all of that came to an end when a huge war broke out between the two races. It ravaged the lands and went on for years, but eventually, humans emerged victorious. They locked the entire remaining monster population underground using a magical barrier that can only be unlocked by 7 human souls, or at least someone or something that possesses that power. The ruler of the monsters, King Asgore, planned to unlock this barrier and start the war all over again, but needed some help. He enlisted several of his monster buddies to find any humans that happened to fall down there, bring them to him and harvest their souls. Among the cast and crew that stood by him were his Royal Scientist Alphys, his protege and captain of the Royal Guard Undyne, a random skeleton named Papyrus who wanted to join the Royal Guard... and his lazy brother Sans.

(*Cue: Sans - Undertale OST*)

No one knows exactly when or where Sans and his brother Papyrus came from. From what little we know, they just appeared in Snowdin Town one day and, this is a direct quote, "asserted themselves". What we do know he was around when monsters were first sealed into the Underground and that he has some ridiculous abilities. Now, he may not seem very intimidating or threatening at first glance, but Sans has claimed that he could have easily killed the player character (Frisk) during their first encounter. And he's not bluffing in the slightest.