He appears as a Challenge Mode Boss, then as an unlockable playable charactor. He mentioned that Kookie's Kwest would be a hit, a hint to his first staring video game.
He appears in his first playable platformer.He is last to be unlocked. He is described more and it is comfirmed that he wants to be a pilot.
Confirmed as a playable star in this Super Mario 64-like game for the NS. Not much is known but that Kookie's past will be revealed more in the game.