There was a ice elite 4 in every region up until sinnoh. Then there was a ice gym leader in sinnoh, unova, and Kalos! Has anyone noticed this fondness to ice?!!?!
Kanto-johto
Loriel (whatever her name is)
Hoen
Glacia
Sinnoh
Candice
Unova
Brycen
Kalos
Wulfric