From Bulbapedia, the community-driven Pokémon encyclopedia.
A Trial Captain (Japanese: キャプテン Captain) is a person who designs and presides over a certain island challenge trial and gives guidance to participating Trainers. All of the Trial Captains have previously completed their own island challenge a few years prior. They retire from their position when they turn 20. Like Gym Leaders, they specialize in certain types of Pokémon. There are usually seven Trial Captains at one period of time to match the seven ordinary trials in the island challenge, although as shown by the Vast Poni Canyon trial, a trial can exist in a functional form without a Captain to preside over it.
Normally, Captains are chosen by the island's Kahuna. However, in special circumstances, they may be chosen by the previous Captain, as was the case when Molayne chose Sophocles to succeed him after retiring.
All Trial Captains (except Lana who uses Net Balls) keep their Pokémon in Ultra Balls.
List of Trial Captains
In the manga
In the Pokémon Adventures manga
Lana, Kiawe, and Mallow are the first Trial Captains to appear in Pokémon Adventures. The three are initially reluctant to recognize Sun as a trialgoer, but after a battle with him, Kiawe bonds with Sun and accepts him. Lana, however, still holds some reservations, and leads Sun and her peers to Brooklet Hill.
In other languages
|| 隊長 Deuihjéung
|| 隊長 / 队长 Duìzhǎng
|| Kapitán zkoušek*|
|| Aanvoerder van de proef|
|| Capitaine d'Épreuve
|| Próba Kapitány
|| 캡틴 Kaeptin
|| Kapitanowie Prób*|
|| Capitão de prova (♂)|
Capitã de prova (♀)
|| Капитан испытания Kapitan ispytaniya
|| Capitán (♂)|