(Headcanons under the cut)
Mafiadust Sans whose Mafia Underlings are more like a cult than a true mafia.
Mafiadust Sans who could shoot someone right in front of a cop and the cop would run the other way and not say shit.
Mafiadust who is feared worldwide, despite no one really seeing him around. When they do, it's obvious shit is about to go down.
Mafiadust Sans who genocided the entirety of monsterkind after being pushed to the brink of his sanity.
And then he just snapped.
Mafiadust Sans who is surprisingly charming despite being incredibly intimidating.
Mafiadust Sans tends to just watch you in silence because small talk isn't really his thing- and he just doesn't really talk much.
Mafiadust Sans whose main love language is Quality Time, Acts of Service and Physical touch.
Mafiadust Sans who won't even do so much as touch you until he's sure you're here to stay- that he can trust you.
Mafiadust Sans who still loves puns and practical jokes and is generally a bit of a goof.
Mafiadust Sans who just... buys you stuff. Turns up one day with some things he thinks you were missing from your house.
Mafiadust Sans who has a secret love of decorating things and likes to collect shiny stuff.
Mafiadust Sans who acts surprisingly like a cat.
Mafiadust Sans who gets flustered so easily, but the void of shadows that are cast over his face are so thick that you can barely ever see it.
Mafiadust Sans who has a secret soft spot for holding hands.