I found this in my notes and I was meant to publish it last year! sorry Random_Fandom_Person who requested this a long time ago!
Capricorn- Undyne
Taurus- Temmie
Virgo- Mettaton
Aquarius- Chara
Gemini- Sans
Libra- Napstablook
Pisces- Frisk
Cancer- Alphys
Scorpio- Toriel
Aries- Asgore
Leo- Flowey
Sagittarius- Papryus