Undertale x Reader [x Special Crossover]

“ALPHYS!”

Alphys scrambled to get up, running to where the noise came from. “W-What is it? Did I do something?”

“Get your girlfriend under control!”

“W-What? Why? What did she do this time?” Alphys fidgeted where she stood, watching her friend pace around the lab.

“She messed with my stuff again!” [Name], Alphys’s friend, gestured widely. They held a wrench in their hand, appearing to be looking for something as they wandered the room. From under a counter, they yelled, “Now I can't find my smaller screwdriver!”

Upon hearing all the commotion, Undyne rolled by the door in an office chair. “What's going on? Did Uptight finally lose their marbles?” The fish creature seemed to be holding a small red screwdriver, picking under their nails with it (for some reason or another).

“There it is!” They shouted, snatching the tool out of her hands. “Stop stealing my shit, Undyne!”

She put her hands up in defense, said, “Fine, fine,” and rolled away.

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[Name] screwed in a bolt, not seeing Mettaton come into their lab.

“Darling, have you seen— oooo, what’s that you’re making?”

“Go away, Mettaton,” they said distractedly, pursing their lips in concentration. “And I haven't seen Alphys.”

“Okay… well, have fun, darling.”

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[Name] sighed, wiping their wrist over their forehead as their hands were converted in grease and paint marks. They put down the paintbrush down in the damp towel, getting up to wash their hands a bit.

“Hey, [Name], are you done yet, it's getting really la—!” Alphys jumped as [Name] scurried to cover up their project.

“No, go away, you aren't supposed to see it yet!” They shouted, tripping over a stray hammer and falling face first on the ground. They groaned as Alphys held back a giggle.

As their friend brushed themselves off, Alphys went up to what they were working on. It took them a second to realise, not what, but who it was meant to be. “Wait, [Name], is that…?”