Must be the season of the witch.
Playable Character Dream
Who: Bayonetta
Bayonetta was born a star. Well, in reality she was born a product of two warring factions and was shunned by both, but she certainly grew into a star. Bayonetta is armed to the teeth; she's never without a weapon strapped to her hands and feet. But what good is it being a witch if one can't flaunt it? Bayonetta shields her body with hair, forcing it into various forms when the need for offense raises. When in a jam she is also able to change form, like a jaguar for quick bursts of speed. Dispel the myth of broomsticks and pointy hats from your mind, this witch means business.
Why She Deserves a Spot:
While both a critical and commercial success, Bayonetta couldn't solve its publisher's financial woes. Despite years of rumours and speculation, Sega's plans to focus solely on its largest IPs dealt the final blow on the chances of a sequel.

That is until Nintendo stepped in. Late last year Nintendo unveiled Bayonetta 2, and announced its exclusivity on the Wii U. And hey, if it's good enough for Nintendo, it's good enough for Smash Bros..
Bayonetta's moveset would make for an interesting addition to the lineup. Her game's combat is where it earned its acclaim, so it stands to reason her abilities would make just as big a splash in Smash Bros..

Bayonetta's simplest attacks would be those of her weapon's, the pistols in her hands and the shotguns on her feet. While hailing for an M-Rated title, it's not as if the series has shied away from that sort of material (Metal Gear Solid's Solid Snake waves a hearty hello from the confines of Brawl). These shots would deal chip damage, and not put out much manage. The meat and potatoes of her arsenal would be the Wicked Weave and Torture Attacks. The former allows Bayonetta to use the hair that protects her body as a more offensive tool. Giant fists and high heel shoes burst out from Bayonetta, sending her opponents careening around the screen. Torture Attacks conjure some pretty insane punishments from the depths of hell. A chainsaw and guillotine might be a bit harsh for Smash Bros., but her Tombstone and Panther Punt would fit in nicely. The sight of a giant tombstone falling from above is pretty comical, and her Panther Punt sends an opponent careening around the stage, damaging other foes along the way.
First Appearance:Bayonetta (Xbox 360, PS3) (2010)
Latest Appearance: Anarchy Reigns (Xbox 360, PS3) (2013)
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Bonus Dream: Assist Trophy
Who:Chibi-Robo
While designed to be a simple maintenance robot, Chibi-Robo has accomplished far more than even you and I. Making his debut on the GameCube, Chibi-Robo is as versatile hero you can find; he saves the world and isn't afraid to do the dishes afterwards. Don't let his 4-inch stature fool you, because it's not the size of the robot that matters, it's what you do with it.
Why He Deserves to be an Assist Trophy:
The heroes of the Smash Bros. series can lay claim to many achievements. Link is a time-travelling peacekeeper. Mario has rescued Princess Peach from arranged marriages, and Pikachu returns power to areas affected by a blackout.
Chibi-Robo though? I think he's the most accomplished of all. He solved the mystery of the heart. In his debut title, he was placed into the home of a family on the brink of divorce. The daughter behaved like a frog, the father was a lazy good-for nothing, and the mother was at her wits end.
Chibi-Robo united them, showed them who they had become, and revealed the path to enlightenment. And he still had time to scrub the floor with a toothbrush! Let's see your beloved Marth do that.
As an Assist Trophy, Chibi-Robo will once again mend a broken bond. When used, he will force two player characters together, and give them the chance to talk it out. All damage will be removed from both, and Chibi-Robo will see his way out after another job well done. At which point both players can resume pounding on each other once again.
First Appearance: Chibi-Robo! (GameCube)
Latest Appearance: Okaeri! Chibi-Robo! Happy Richie Ōsōji! (2009) (DS)