Eeyore

Eeyore is the character of the Hundred Acre Wood world of Kingdom Hearts, Kingdom Hearts: Chain of Memories and Kingdom Hearts II. In the first two games, he doesn't have a voice role, but is voiced by Gregg Berger in the English version and Taro Ishida in the Japanese version. He is based on his apperance in Disney's Winnie the Pooh franchise. Eeyore lives in a world within a world, whose inhabitants are blissfully unaware of the battles waged outside of their peaceful forest.

Kingdom Hearts
Eeyore was not present until Sora collects the missing pages of Pooh's storybook by entering other worlds and finding the scattered pages. When Sora, Pooh, Piglet, Owl and Rabbit visit a lake, they find Eeyore floating in the water. Sora rescued him and then helped him find his attached-tail, which he had lost.

Kingdom Hearts: Chain of Memories
Like all of the other Winnie the Pooh characters, he is part of the mini-game "world" of Hundred Acre Wood, where he must be found while leading Pooh from one end of the map to the other.

Kingdom Hearts II
Because the Heartless torn out the pages of the book again, most characters in that world disappeared, leaving only Pooh within that world (with no memories of any of his friends). To solve this problem, Sora went on another journey to find the scattered pages of the book and assisted Pooh's friends in helping Pooh regain his memories of them. When Eeyore finally reappeared Pooh didn't remember him until after Sora and Rabbit gave Pooh honey in attempt to use food to trigger his memory.

Personality
Eeyore's character is very pessimistic, having never been exposed to the harsher realities of life outside of his world in the 100 Acre Wood, and also due to being a product of Christopher Robin's imagination. He is very pessimistic, often thinks things on the bad side, but is always willing to help his friends.

Appearance
Eeyore is a grey little donkey with a depressing impression, with a metal tail that he is prone of losing (which he did in Kingdom Hearts, but Sora was able to reattach it with a thumbtrack like Christopher Robin).

Origin
The version of Eeyore used in the Kingdom Hearts series is based on his apperance in the 1966 series "Winnie the Pooh" and all of the Pooh adventures that followed.