Who they are in the HP universe.

Aries: Neville

Taurus: Luna

Gemini: Ginny

Cancer: Albus

Leo: Ron

Virgo: Draco

Libra: Sirius

Scorpio: Lily

Sagittarius: Hermione

Capricorn: Severus

Aquarius: Dobby

Pisces: Lord Voldemort