For example (for fun not serious) maybe Selena Gomez could voice Aqua and Joe Jonas could voice Terra
Ugh... Joe Jonas?! Selena Gomez?! Don't make me vomit up my dinner. They don't need more "famous" actors in the cast, they need good VOICE actors who can portray emotion and their character with just that: their voice. Not a pretty face who just HAPPENS to be well know to the general public. It's truly riduculous.