Darach is an adept Castle Valet with extraordinary insight. The secret to his strength is his ability to make decisions on the fly, which allows him to adapt to any situation.

A butler who serves Caitlin, the owner of the castle.
He gives off a thoughtful and modest impression.
He is not just a personal secretary to Caitlin, but is in charge of the entire Battle Castle.
As a butler, he has excellent observation skills so he can adapt to any situation.
His strength is confirmed by his accurate judgment of the situation, which he makes using his observation skills.
He does not seem to realize that he utters strange calls before a match.

Battle Sprite: Kyledove
She's a highly skilled Pokemon trainer and does enjoy battling herself, but because she loses her composure when she gets excited her parents have forbidden her from battling.
Incidentally, her parents are currently traveling across the world.
Perhaps because she's cross about it, or perhaps because she's not used to interacting with others her attitude tends to be rather cold,
She's still rather childish and generally good-natured for her age.