Alphys

Alphys is a secret encounter in Dusttale. It is possible to meet her by finding the key to the True Lab behind a purple poster of Mettaton's original form. She is killed by Sans if you encounter her, but it can be assumed that she survives otherwise, as the surviving monsters evacuation occurs inside the True Lab.

Appearance
Her appearance is the same look as when she appeared in Undertale.

Personality
In this AU, Alphys seems more confident, perhaps due to supervising the evacuation of the Underground. She still hides in the true lab however, scared of what might happen if she ventures outside.

Gameplay events
Upon Chara 's arrival, she panics and attempts to fix the DT extractor, and the player must find her as she ventures throughout the lab. Upon entering the DT extractor room, Sans is there. Sans then thanks Chara for letting him in. He slowly advances, but when he is underneath the extractor, Alphys activates it, intending to take away his determination to continue killing. Promptly after however, it breaks down, leaving Sans free to kill her.