No, only monsters use Beam, no character gains it as a spell or ability, nor does any item cast it.
In most games, any of the main character (playable) character can be stoned or petrified.
No, Sephiroth is not the son of Kefka. Sephiroth is a character from "Final Fantasy VII," while Kefka is from "Final Fantasy VI." They are separate characters from different games within the Final Fantasy series and do not share any familial relation.
There are no cheats for any Final Fantasy game
The Best Villain in my opinion, as a villain not a character would have to be Kefka, because, he unlike any other final fantasy game, succeeded in his goal, destroying the world.
Yes, Tellah is the only real "main" character that does though.
The newest Final Fantasy VII game is Crisis Core: Final Fantasy VII for the PSP.
They are only connected in 2004 version of FINAL FANTASY. They don't have a connection therefore many players dislike Final Fantasy XII.
In Final fantasy IX you can set the controllers to respective characters who will then be playable by that controller in the battle screen. Controller 1 however wil always control the main character on the world map / area map. This feature also appeared in several re-issues of old Final Fantasy games for the Play Station - i.e Final Fantasy VI
You can find any clips from final fantasy games on Youtube.
You can find all the plots on the final fantasy wiki.
There aren't any Mario games with final fantasy characters.
no