Model file utilized by Nintendo Wii games such as Mario Kart and Super Smash Bros. Brawl; contains model data, such as shaders and colors, for 3D models; similar to .PLT0, .PAT0, and .TEX0 files; typically found within the .BRRES resource package file.

MDL0 files are most often used for characters in a game. For a lot of games, there is just one MDL0 file that contains data for the character model. But there are also some games that have multiple MDL0 files for one character, usually for body parts, such as hair, eyes, head, body, etc. NOTE: The BrawlBox program opens both the BRRES file and the contained MDL0 file.