Note: All credit regarding this information leak goes to XOF.
Among these, are cards owned by the protagonist Jaden Yuki and other prominent characters such as Aster Phoenix, Chazz Princeton, Alexis Rhodes and Bastion Misawa, meaning that they might be the first unlockable characters once GX is added. The datamine also shows the rarity of some cards and how duelists could get them.
Zane is a powerful duelist from GX series, his deck is themed around Cyber Dragon and it's other forms and fusions, his deck then centered around both Cyber Dragon and Cyberdark later on in the series.
Konami is so lame. why didnt they release duelist on order of experience. when gx released it should have been jaden, cyrus and the fat boy first because well they really are lame and jadens deck is pure anime heart of the cards shit. and then later we could have gotten the cyber dragon guy, the amazoness who beat the bricks off the multiple elements decks. as you can see i dont know any of their names because i havent watched the show since its inception