For Team Switched's rendition, see Alphys/Team Switched.

Alphys is the captain of Royal Guard.


She is much bigger and stronger than normal Alphys. She uses a huge battle axe, and her armor is dino skull themed, being a dark shade of green. She has claw scars vertically across her left eye.[1]


Alphys is fierce and unforgiving to the protagonist, unless they never killed anyone before fighting her. She enjoys watching anime and sometimes helps out Sans with his cooking.[2] She is in love with Undyne for her determination and analytical behavior, despite seeing her as a total nerd. Alphys is also unaware of the reality of anime unless the protagonist tells her about it.


  • Her name in the Genocide Route fight is "Alpha Alphys".[3]
  • In her fight(s), she throws rotating axes at the protagonist instead of arrows.[4]


  1. hello yes i would like to write some underswap fanfic, can you give us anymore headcanons? like who else has swapped and whatnot? and does sans still like puns or is that Papyrus' thing? does pap still make spaghetti? Popcornpr1nce's Tumblr.
  2. character personalities Official Tumblr.
  3. If in Undertale, it's Undyne the Undying, then in Underswap, it's Alphys the Agressive? Official Tumblr.
  4. If Alphys replaces Undyne's spear with an axe, what would the bullet/arrow things become? Official Tumblr.
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