Board Thread:General Discussion/@comment-26006155-20181123023529/@comment-32182236-20181203211918

"The reason Sans is Grillby's #1 customer is because he's a time-traveling adventurer (just like Frisk..) who eats tons of monster food to replenish health."

..Where's the evidence that he's an adventurer at all?

"Despite what Sans said at the MTT dinner, he did NOT make a promise to Toriel, something he reveals at the start of Megalovania "Sorry Old Lady, this is why I never make promises."

This was him adressing Toriel specifically. He hates making promises, and this is exactly why. It can backfire TREMENDOUSLY.

"If Sans was just another monster wanting to be free, it's very clear he could have crushed Frisk on a whim the first time they met in the Underground."

Just about none of us theorists believe that he wants to reach the surface. He even states himself that getting to the surface doesn't appeal to him anymore either, because even if they make it, they'll all end up back underground with no memory. Do you not recall that line from his Genocide fight? THIS is my take on Sans:What has been explicitly STATED to be true!

"When Sans has killed Flowey many times an alternate timeline, just for messing with Papyrus."

While we have proof that Sans killed Flowey on multiple occasions, we don't have proof that Papyrus had anything to do with it. We do have proof that Flowey wanted to see what happened if he killed EVERYBODY, and actually did this before. He took his own Genocide Route. That's probably what caused Sans to kill him.

"And Sans has his own reasons why he doesn't want to fight Frisk himself.. unless it's an absolute last resort."

He just doesn't care. Until the very fabric of time and space depend on it, and he just can't afford not to care anymore.

The one thing he still actively pursues is having fun with his brother, and making him happy. Probably the reason why he decided to help Papyrus in that ending.