Tier 15 is a level beyond human comprehension.

Same!

In the future where Mordecai and Rigby stay in the place with no rules, yes. But they left so the future is different now.

At Comic Con Rebecca Sugar said that Steven is the only gem who was born. And then the panel ended! So who knows? I don't think they ever were kids.

Yes, please cover it!

That's because he's awesome! The voice of Flame King is Keith David, who also voices Dr. Faclier in Disney's Princess and the Frog, the cat in Coraline, and a bunch of other guys IMDB remembers better than I do: http://www.imdb.com/name/nm…