This overprotective Sans stuff. Like, not just protective in actual situations that deserve some form of fear and caution. I mean like the “oh no papyrus smoked a cigarette!! who is responsible for this!?”
Please, go back to Undertale (2015 Video Game) and look at Sans and tell me: does he look like the kind of guy who’s going to be busting down doors because precious babby brobro said a swear? I’ll grant you that Sans can be that threatening kind of protective, but it’s all more likely to be bluster than anything, and I dont see him trying to genuinely snatch his brother’s independence and agency away just because he did something “wrong.” Sans is a supportive brother. Papyrus wants to swear? Shit, man, he’s got all kinds of swears. This can be a bonding exercise and he doesn’t even need to leave his couch! Sharing his encyclopedic knowledge of cursewords with his straitlaced little brother is awesome.
And if he ever saw his little brother drinking, he would probably only enjoy the laughter and the opportunity to play some pranks that a sober Papyrus would be too sharp to fall for. And if papyrus discovers that he cannot protect himself against the same 3 knock knock jokes all night (or he discovers that low effort bone puns are hilarious to his drunk self) well, that might be a totally unplanned deterrent towards further endeavors into drinking.
Sans isn’t going to go breaking into houses and yelling at the King of All Monsters because Papyrus said a “bad” thing.
Where did this characterization come from?
I think this comes at least partly from this obnoxious tendency to infantilize Papyrus.
“No,” Edge said, “You two may be lazy-bones, but I have things to do today, I am not—” Twist took his hand, starting to play with his carpals. His claws pricked lightly at the joints, massaging the thin bones. Edge glared at him, but Twist just smiled innocently, brining the hand to his mouth to kiss the back of it lightly. “Have you see the state of this place?” Edge asked, exasperated. He could see where this was going. “I need to clean—”
“house is fine, edgelord,” Rus said, sidling up beside him to nibble at his cervical vertebrae. “you don’t need to do anything other than stay. right. here.” He punctuated the last few words with a light kiss.
Finally, Edge groaned and leaned against the back of the couch, allowing the other two skeletons to cuddle against him, both of them purring loudly. “Fine,” he snapped, “you win. You can stop now.”