Double Coston is a character version of the card, "Double Coston".
Double Coston appears in the video game, Yu-Gi-Oh! World Championship 2007. It appears as a Level Four Limited Duelist and it challenges the player to only included Zombie-Type monsters in the Deck. By beating it, the player gets closer to unlocking Level Five Limited Duelists and a new Booster Pack. It also appears as a downloadable ghost.