You can't there was a April Fools picture with Tails and Sonic but those two were just edited on.
Chat with our AI personalities
Be tails and beat sonic with five lives 30 times
You have beat tails without losing 5 lives at all!
You have to play classic mode and adventure as tails
Tails is not a playable character in Super Smash Bros. Brawl. He only makes a cameo appearance in the Green Hill Zone level and is also featured as a trophy.
just press o with a smash ball