Alphys

Alphys is a long-standing resident of UMH. She was brought by Undyne, several years before her own admission. She suffers from Generalized Anxiety Disorder and Bipolar Disorder (or Manic Depression).

Appearance
Alphys doesn't look too different from her Undertale counterpart. She still wears a labcoat, though it is stained with blood. Her glasses are also cracked, which she doesn't seem to notice.

Undyne
Undyne is one of the few people Alphys has a close relationship with.

Mettaton
Alphys loves how confident Mettaton is and how he takes care of his family. She also enjoys his snarky gossip when he comes in for repairs/upgrades or just to check up on her.

Genocide
In the Genocidal Storyline, Alphys tends to be more on-edge.

Lucario
At first, Alphys is scared of Lucario, seeing as he wears a straight jacket. But, after a short conversation with him she finds that he too is interested in anime. This gives him a good reputation with her, and the two regularly hang out to watch anime in Alphys' room.