Pokémon Merlin Series 6, also known as Merlin Advanced, is the sixth Merlin/Topps Pokémon set, released in 2004 and built around the Hoenn Pokédex and the Advanced Generation animated series. The 240-card collection includes two un-numbered berry-backed cards, 203 numbered cards (200 Hoenn-era Pokémon portraits plus three episode battle scenes), 15 lettered quiz cards, and 20 poster cards.
Thirty-five of the cards were issued as sparkle/holo versions. As with every Merlin series the card fronts reuse shared artwork, so the trademark year on the back is the dependable way to place a card in Series 6 — front and back photo slots are both kept.
The 15 quiz cards are identified by letter on the back, with the run shown as A–H then J–P.