Who's.Who is a 3-cost Purple character from Tournament Pack Vol.3 (010), FA rarity. Power 3000. Effect: [On Play] DON!! −1 (You may return the specified number of DON!! cards from your field to your DON!! deck.): K.O. up to 1 of your opponent's Characters with a cost of 3 or less. [Trigger] Play this card. Animal Kingdom Pirates Illustrated by Suemi jun