With 113 cards and 1 secret card, EX Delta Species introduced Delta Species Pokemon and Holon’s Pokemon. Set in Holon Research Tower, the home of scientists conducting research on Mew and new Pokemon, the experiment went wrong and produced Delta Species, different typed Pokemon compared to usual species.
Delta Species Pokemon had a symbol on the name of the Pokemon and a double helix on the border of the artwork windows. The set was released in October 2005 and featured Generation III Pokemon.
Cards to check out include Groudon Star #111, Kyogre Star #112, & Metagross Star #113.