However, that is 49 blocks, and maybe you don't want to make that many. Six rows by six, or 36 squares, with three inch sashes and a three inch sashed border would give you more than enough for your queen size comforter, 93 X 93.
5.) Whether or not the character(s) are good to play as is irrelevant. I have come to the assumption that the strongest characters are Super Sayain 4 Goku, Vegeta, and Gogeta, Omega, Nuova, and Eis Shenron, Super Saiyan God Goku, Whis, Beerus, and Super 17.
This is a guy who punched Sonic in his Super form proving that he's as powerful as Sonic if not stronger as well as running almost as fast as him. There's a reason he guards the Master Emerald and that's because he's one of the most powerful Sonic CHARACTERS. STRONGEST ONE!