.NUANMB File Extension

Super Smash Bros. Ultimate modders are most likely to encounter NUANMB files. Using various tools, these modders can modify Ultimate's in-game characters. While doing so, they may wish to modify a character's animations, which are stored in NUANMB files.

You can open NUANMB files in Blender with the io_scene_numdlb add-on installed. For complete instructions on how to do so, refer to io_scene_numdlb's GitLab page.