Browsing Wii ISO

[Garamonde]

The easiest way is to play the game and use Dolphin's texture dump feature which will dump all 2-D graphics that are loaded into their own folder under the "User > Dump > Textures" directory. Although if you want to try your luck or the above doesn't work for you, you can try this. This here's from my model ripping guide. Hopefully the graphic format/s is/are not in a weird unknown format!

Tutorial for extracting files from ISOs with the Dolphin emulator:

What you need:

• Dolphin emulator 32/64-bit: This plays GameCube and Wii games (ISOs). It has a lot of cool features and is the best Wii/GC emulator available
  

• An ISO of the game you wish to rip from: Type "*game name* ISOs" without the asterisks into Google to find these, not going share any for obvious reasons
  

• An archive extractor (optional): In the list of games that use .BRRES format models that I linked to below, some will be in compressed formats (such as .SZS, .ARC, .LZH8, etc.) and need to be extracted using the corresponding tool also listed in that link (however not all of those games' models can be decompressed so be sure to check the compression first to see if it's in a known format before you waste time and space downloading the ISO. If you're lucky, the models won't be compressed at all and you can open them in BRRES Viewer right away!)
  

Now onto the tutorial:

First, open Dolphin. You will see all the ISOs you have (as long as they're in the same folder as Dolphin, make sure they are). If for some reason the ISO you want isn't in the list, then go to "File > Browse for ISOs" and open the folder containing the game. It should appear then.

Next, right-click on the game you want to extract files from, and click Properties.

Now, you should see several tabs on top. There should be one at the end that says "Filesystem". Click on it.

You will now see a list of the game's files. You want to right-click on the file with a CD icon next to it named "Partition 1" and click "Extract All Files", then browse for the folder you want the extracted files to go (you can also click "Make New Folder" if you forgot to make one beforehand).