Prototypes...

Left Miku: Durrrrr... I'm a Sailor Scout! Durhurhurhur!!

Right Miku: Would you please shut up...?

Middle Miku: Eh hehehe...
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Note:
This is basically another "evolution of Brawl hacking" kinda thing. As you can see, the middle one is a model import, where as the others are vertex edits.
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Credit:

The main Miku was imported by BlackJax96, and the model was made by Mamama. Download it here.
[link]

The dopey left Miku... Was sadly made by me (although I did make her a little more dopey here). Download it... Here... I guess...
[link]

And the right side Miku was made by Aafyre. Download her here.
[link]