You can't. He's not a character that's in it
Chat with our AI personalities
you don't.
No.
Geno does not exist in SSBB. It is possible to texture hack to make a character look like Geno, but Geno is not a real character in SSBB.
ask some one who can jail break it
It's not possible to unlock him in the brawl game and play as him whenever you want. you can't play as any other bosses either Iqskirby