Hala is the Kahuna of Melemele. (he's in charge of the whole island) He runs the with grit and positivity alongside his Trial Captain Ilima.
Olivia runs Akala alongs her three Captains. this is due to the sheer size of Akala Island, its a lot of land to cover!
Nanu is a lot more laid back than the other Kahunas. However, he keeps Ula'ula smoothly run with him and his two Captain's.
Hapu is actually a recently appointed Kahuna. Her young country girl spirit keeps the locals on their toes. All by herself no less. this is due to the little population in Poni.