Bowser Jr.

[Black Boo]

I think this could work...

B: Sonic Roar. Charges up over time, then blasts opponents back after awhile. If used twice in a row he just hacks and coughs.
Side B: Shell Toss. We've been over this.
Down B: Shell Sheild. What Koopaul said.
Up B: Hellicopter Paintbrush. Spins the brush in a helicopter twirl which in the process flings goop everywhere.
FS: Mecha Bowser. Fires Homing Bills and breathes Fire from the background.

>.< I accidentally clicked yes...

[Kriven]

I figure I'll just through my own ideas in here...

B: Sonic Roar - Basically his only unique attack other than the paintbrush abilities. Charging the attack is like Marth's B, button release unleashes the attack.
Side-B: Shell Toss - I'm thoroughly enjoying and supporting the previously mentioned shell toss ideas.
Down B: Spike Defense - He ducks into his shield for protection, shield break if you wait. If you use while moving, you'll slide slightly.
Up B: The helicopter thing is a cool idea, but maybe you should rapidly tap the B button to rise....

[SiFi270]

FS should totally be Megaleg from Galaxy.

[TomGuycott]

Personally I think a Doomship would be a more fitting FS for him, but that's not to say Megaleg isn't a good idea either.

[Devicho]

His FS could involve a Koopa Clown Car, what with this.

[Koopaul]

That's good he could jump off of it too as another jump! Maybe Clown Car should explode at the end causing damage and it to disappear?

[Chaoxys]

I like the Clown Car idea.

That or have a doom ship appear over head with the other koopa kids aboard. They could then send magic blasts down around Bowser jr. that spiral around him, making a dangerous barrier. Idk, somthing with all the koopa kids would be cool imo, but I'm not sure what.

[Ton]

That would take waaaay too long for a simple B-attack.

[Chaoxys]

That would take waaaay too long for a simple B-attack.

Who said B attack? We were talking about his final smash.

[Ton]

...Oh.

[Koopaul]

I wasn't.

[Wes]

The Clown Car could work as an Up B where he just sort of rides in it momentarily and can be controlled to go wherever (kinda like ROB's where you could apply gas and make it go until it is forced to stop). But the same movement mechanic could work for a Paintbruch Helicopter, which I think would make a much better B move. For the FS, maybe you could get in the car and fly around, firing Bullet Bills for a period of time (similar to Yoshi). Some Bills could be purple and seeking (like the red canons from Sunshine shot) and maybe a gold one that does more damage. And you could also run people over with the Car itself.

[Zoo Monkey]

Awww... I like these ideas but I was thinking of him turning into shadow mario for his smash... thats a different character right?

[Snuka7 (Dark Lord)]

Heh, I just thought he looked too skinny, but I'm not sure...

   

I tried at expanding his width by one pixel.

[[robo9]]

Maybe the PaintBrush Helicopter as a side B? He'd hover off the ground a tad and go sideways, maybe chargeable, as the farther you charge it the farther you go? It could be a second recovery move.