You need to weld the normals on all of your models, depending on what you use ofc.. 3DS Max hopefully?
Otherwise I'd like to fix them for ya, it's a 1 minute fix
EDIT:
While I'm looking at Patrick, I noticed that you didn't fix the .DAE files nor the .OBJ file.
For the DAE file:
____________________________________________________________________________________________________
<library_images>
<image id="patrick_png_001" name="patrick_png_001">
<init_from>
../../../../../users/jacob/models/battle%20for%20bikini%20bottom/patrick/patrick.png</init_from>
</image>
</library_images>
____________________________________________________________________________________________________
This is section is where the location of the textures are defined but as of now, it links to a location on your computer (Hi Jacob!).
To fix this, simply do what I do here:
<library_images>
<image id="patrick_png_001" name="patrick_png_001">
<init_from>patrick.png</init_from>
</image>
</library_images>
You see? I removed the entire path of the image while keeping the filename in.
That's how to fix the dae.
For the .OBJ, it's a similar process.
____________________________________________________________________________________________________
# Material file for patrick_bind.obj
newmtl patrick
Ns 0
d 1
illum 2
Kd 0.8 0.8 0.8
Ks 0.0 0.0 0.0
Ka 0.2 0.2 0.2
map_Kd
..\..\..\..\..\users\jacob\models\battle for bikini bottom\patrick\patrick.png
____________________________________________________________________________________________________
The bolded part needs to be removed and voila!