Dreaded data.arc

[Arty Dragon]

I want to extract character models from Chaotic: Shadow Warriors and I'm looking at the files in Dolphin and there's this file, data.arc. Besides that, there's system files and movie files, so I'm assuming all of the models is in data.arc. This kind of contradicts the tutorials I've read on extracting arc files where all the game's assets are just listed out for you to pick and choose. I've tried a few arc extractors but they don't recognize the file as an archive. I also read that different companies use different versions of the arc format, or something. I dunno- I'm new to this model extracting thing. I'm used to 3d Ripper dx printscreen-like functionality, but I want the characters in the T-pose.

So... how do I open up data.arc?

Edit: Oh, and I mean the Wii version of Chaotic: Shadow Warriors.