They are either from the manga, or maybe from an upcoming episode of GX, but most likely fromthe manga. Jaden might use Gaia in his duel against Yugi in the final episode...
Verfalk - 20. Mar, 21:28
So...
What do they do?
RedEyesFan - 21. Mar, 00:55
i tried my best...
E.HERO Gaia when summoned allows u to half one of ur opp's ATk position atk point and add to (i cant read that)
supreme_slayer - 19. Apr, 02:13
Kasha's effect from the manga is:
If you control 2 or more Zombie-Type monster face-up in your Field, you can Special Summon this card from your hand. When this card is Special Summoned, return all face-up monsters other than "Kasha" on the field to their respective owner's Deck. This card gains 1000 ATK for each Zombie-Type monster returned to your Deck this way.
Gaia's supposedly a Fusion with the following effect from the manga:
"Elemental Hero Knospe" + "Elemental Hero Woodsman"
This card cannot be Special Summoned except by Fusion Summon. When this monster is Summoned successfully, you can select 1 face-up monster your opponent controls. Halve the selected monster's ATK and increase this card's ATK by that amount until the end of the turn.
WTF