When they find you

Dust had been waiting for frisk to come back so he could kill them again,he was used to this cycle of resets. But this time was different,there was no reset. He waited and waited for what seemed like hours,until crunching was heard. He turned as fast as a lighting bolt with his sharpen bone to see... a baby scratch that an infant."What the hell? Where did you come from? Where's frisk? Why am I even asking you? Your just a baby who somehow got here,hmmm you don't look related to frisk at all...huh I'll keep you! Oh sh*t! I was just making fun of cross for having a kid and now look at me...ehh screw it! You are my smol bean! I'll name you....y/n yeah! Awesome!

When you Learn to walk
"Okay baby bones...come to dusty~" You didn't move a muscle and stared at him confused,you tilted your head slightly."Kid I get it your adorable but come on and walk for dada?" You move your legs clumsy walk to dust,you then fall in his lap."Yeah! I knew you could do it honey!"

What other Au sans babysit's you

He really doesn't like leaving you with other Sans but when he does he would leave you with Geno or Horror sans since they are almost the same in a way.

Your first word
"Bad time"

His favorite outfit for you