I do a lot of stuff with the Sentarous, anyway. But time to talk about the Kataloni.

The Kataloni Culture is sort of like feudal japan; it's very traditional and there's a lot of checks and balances. Every noble house has the blood of Kataloni in their veins whilst the peasants do not. Lightning is a sign of nobility. However, developing a reason for a young kataloni heir to travel this far out is an interesting challenge all the same. But that can be said about any of the elementals (called guardians, not mages for future reference) as a lot of them are sacred, noble, or important to their peoples.

Also in terms of population high-to-low:

Wind
Storm
Frost
Tides
Earth
Flame