The signs as Harry Potter Characters:

Aries: Ginny Weasley

Taurus: Ron Weasley

Gemini: Draco Malfoy

Cancer: Rubeus Hagrid

Leo: Harry Potter

Virgo: Hermione Granger

Libra: Remus Lupin

Scorpio: Bellatrix Lestrange

Sagittarius: Sirius Black

Capricorn: Severus Snape

Aquarius: Albus Dumbledore

Pisces: Luna Lovegood