Alphys (Undertale Film)

Alphys is a character in the Undertale 2025 film. She is a reptilian monster that lives in the lab in western Hotland. She is the incumbent Royal Scientist, a position she was awarded by Asgore after the disappearance of her predecessor.

Appearance
Alphys is a yellow, reptilian monster of similar height to Frisk. Her posture is somewhat hunched over. She has yellow scales, claws, and 2 protruding teeth. Her feet have three toes while there are three fingers and a thumb on each of her hands. Her "hair" is designed into points facing the back of her head. She normally wears round glasses and a white lab coat. Her glasses do not cover her eyelashes. However, she wears a black dress with white polka dots on her date with Frisk.

Personality
Alphys is a nerdy, shy recluse with a fondness for human anime and manga. She has a crush on Undyne, but struggles to communicate her feelings.

Alphys is filled with guilt and insecurities about herself and her accomplishments. After she accidentally created the Amalgamates while experimenting with determination, she told nobody and became deeply depressed and remorseful.

Differences from Game Character

 * In the game, Alphys' decision to tell the families of the Amalgamates about what she did to them is entirely her decision, and the player has no say in the matter. But in the film, Alphys is convinced to do this by Frisk, as she was unsure if it would be better to hide the terrible truth and pretend it didn't happen, or just come clean.