Komasan Jack is Komasan dressed in attire that resembles the "Jack" from common playing cards. He has a blue hat and robe, the latter of which having black and yellow pattern along the edges. Underneath is a sash adorned with three suits; Hearts, Clubs and Diamonds. He has been given curly blonde hair, and holds a yellow tipped feather.
Komasan Jack is a combination of Komasan and Jack, as in the playing card.
Komasan Jack is based on the Jack, one of the most important playing cards.
His outfit is not specifically taken from one Jack, and instead has elements from all four suits; the curly hair and hat is shared among all the suits, the feather from Hearts, the sash from Diamonds, and the robe from Clubs or Spades.