Championships - Zero-G Beys

Um..for the beyblade world championships, are we allowed to use Zero-G beys in Metal Fight Beyblade championships?
Are you referring to Grand Battle 2's events? If so, yes you are.

Anything is allowed for use as long as the bottoms aren't worn out, by brands like Rapidity, or Lian Fa Toys, but there's more brands like that you better watch out for. You also can't use Hasbro's creation of Beyblade, like Beywheelz.

Also, I really don't think this thread really deserves it's own topic. Questions about the WBO would be considerably better, if you are referring to Grand Battle 2's events.
Well, there was already a Metal Fight Beyblade World Championship, so you can't use any type of beyblade.

Also, where did you hear about this?