Shadow Bug
Some ppl have suggested that a character created in smash should be a playable character.Tabuu has been mentioned.
Even Master Hand.
Others have suggested that Sakurai should create a new, pure, "Smash Bros Representative".
However, I personally would love having this underestimated guy as a playable.
And, on a sidenote, he's got a better Moveset Potential than Ditto.
There's no need too put together a whole moveset for him right now, though.
But Imma tell you about his neutral B:
Neutral B: Shape Shift
Shadow Bug transforms into any of the other character for 10 seconds.
Your input decides what character.
(Mortal Kombat Fans will recognize this)
Example:
While holding B, input:
Forward, forward, forward, to transform into C.Falcon.
Up, down, up, for Samus.
A, a, a, for Mario.
Back, a, forward, for DK.
... and so on.
This character could be really effective when in the hands of a skilled player.
Cons: Could easily be broken if not balanced properly.
Could aslo put to much pressure on your hardware.