Darach, known as Kokuran (コクラン) in Japan, is a character introduced in Pokémon Platinum.
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 (official bio).
He has grey eyes and short black and blonde hair. He wears semi-rimless rectangular glasses, a white shirt with a bowtie under a buttoned vest, a tailcoat, white gloves, purple pants, and brown shoes.