Kingdom Hearts was the dream game come true for me : a game where all the Disney worlds came together in one massive continuity. Dude, Disney Action Adventure RPG that was not catered to 4 to 6 year olds? I was SOLD!
The first one was way better than the second one (which I felt started to go too much into its own convulted mythology). Still, I played it for the chance to traipse across the various Disney worlds and interact (and sometimes fight alongside!) the beloved characters from my childhood. :D
Sora, the hero of the story.
Mickey Mouse. In the Kingdom Hearts universe, he is King Mickey.