I used to watch it a long time ago. It was about a war between planets. Fire Planet, Rock planet, some other planets (maybe elemental). The rock people were all big n bulky n like mining slaves. There was one slave guy who rebelled n took his drill laser n fought back. But then a giant moving planet appeared that could open up and devour entire worlds. and the worlds all had to join together to fight back. then they found out at the core of the planet was a kind of control room where you could pilot the entire planet. That's all I can remember about it, any ideas what it was I'm talking about?
