The most recent version of Brawlbox (v0.71):
>http://forums.kc-mm.com/Gallery/BrawlView.php?Number=35494&Moderated=All&facebook=true

The .rar containing all the models:
>https://www.dropbox.com/s/sm14asz0xfwqbye/Pokepark%20files.rar
*A few of the Pokemon files have been renamed to their English counterpart, but most are still in Japanese (ex: Squirtle's file is named "Zenigame" instead of Squirtle)

Brawl models:
>https://drive.google.com/folderview?id=0B4vhNdf69qaSZ0N0MnBjOXFYMU0#
*The fighters can be found in the "Fighter" file and the Pokeball Pokemon can be found in the "Item" folder. There are multiple files in each of the fighters folders. You only need the files named "Fit[Charactername]XX.pac" and "Fit[Charactername]MotionEtc.pac".

HOW TO BRAWLBOX
>extract the files from the .rar
>open the file you want using brawlbox
>click the + next to 3DModels(NW4R)
>right-click on the grey MDLO file and select preview
Controls: scroll wheel zooms, right-click pans, ctrl + right-click rotates
>click the bar on the left to bring up the animations/objects/textures bar
>select the animation you want
>click the bar at the bottom of the window to bring up the animation player
>click the check box that says loop, then click play

FAQ
>How do I save a gif of the animation?
Pause the animation and set the frame to either the first or last frame. Click the bar at the top to bring up the options bar, then click Options/Take Screenshot/To animated GIF.

>How do I load another Pokemon's animations?
Click the "Load" button underneath "Animations", navigate to the Pokemon whose animations you want to load, and select it.

>There are random black marks sticking out of the Pokemon, what do?
Uncheck the box that says "[Pokemon's name]SpecularDh".

>How do I load the animations for the Brawl models?
Load the file named "Fit[character]MotionEtc.pac" after the model viewer opens.