Birth By Sleep: Known worlds, Keybaldes and Characters

Sunet Horizons

Characters:
Terra
Ven
Aqua
Mickey Mouse
"Master Xehanort"
Dark Soldier

Keybales:
Terra's Keyblade (seems to be rock-based)
Jungle King
Whishing Lamp
Dark Keyblade (weilded by Dark Soldier and Xehanort)
Stakseeker

Olympus Coliseum

Characters:
Young Hercules?

Sleeping Beauty's Castle?

Heartless:

They appear to be a form of shadow, possibly more powerfull than Neoshadows.

Destiny Islands

Characters:
Sora
Riku