Kanto:

King: Giovanni
Queen: *dead*

(I decided to change the region for them).

Johto:

King: Lance
Queen: (not yet decided)

Hoenn:

King: Steven Stone
Queen: (not decided yet)

Sinnoh:

King: (not yet decided)
Queen: Cynthia

Unova:

King: N
Queen: Hilda

*cough* Sylveon12 *cough*

Kalso:

King: (not yet decided)
Queen: Diantha

Alola:

King: Kukui
Queen: Burnet
(Thanks ZoeSpook for the help on Alola)

I need help guys.

XD