Sabin here is from Trabia! Though he went by a different name (Rene Macias) because he was in a ditching family inheritance phase. He was in Trabia 10-11 years ago up until the missile attack (Would Rhea be around at that time??) then he's ran off to seek further training and enlightenment and just rejoined the ranks as a Balamb SeeD last year.
Then I have Nanaki who is a cadet and is basically the resident werewolf of the Garden, no thanks to the Lunar Cry. It was a guarded secret up until a couple of months ago so now everyone know he turns to a red lionwolf beast at full moon annnd he's getting by. He will try not to sneak attack on Rhea (but if it does he apologizes, he's still trying to control his alter-ego).