It's often been said that pets resemble their masters, and GF-related items like pet houses made me wonder which characters would match the GFs the most in terms of appearance and personality. This is what I came up with:

Squall: Griever
Rinoa: Shiva
Quistis: Siren
Zell: Ifrit
Irvine: Alexander
Selphie: Carbunkle

Seifer: Diablos
Raijin: Quetzecoatl
Fujin: Pandemonia

Edea: Eden
Cid: Brothers