Love is Pain Skill is added as Drop Skill to Exclusive Skill Section
Yubel, a monster card that Jaden owned when he was still young, appears in the third season of Yu-Gi-Oh! GX as the main antagonist. It exists as a real Yu-Gi-Oh card as well. She's the guardian of Jaden's Ancestor, and Jaden is the reincarnation of his ancestor so she protected him as well. Until she was exposed to the Light of Destruction in outer space which drives her to insanity.
Broken Seal You can use it every time your life point decreases by 1,500. Randomly add 1 level 10 monsters to your hand instead of performing a normal draw during the draw phase. This skill can only be used if there are more than two level 10 or more monsters on the deck.
Right Back at You Can be used in the Main Phase of your next turn following the turn in which you took battle damage. Select 1 face-up monster on your field. This turn, the selected monster's ATK increases by half of the battle damage received in the turn you last took battle damage. This skill can only be used once per turn.
Fiend Farewell Can be used when one of your monsters is destroyed by battle. 1 random Fiend-Type monster from your Deck is sent to the graveyard.
Love is pain If you receive damage from your opponent's card effect when your Life Points are at 2000 or below, your opponent will receive the same amount of damage.
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.