# Some Mixamo models are broken in animation, others not

**URL:** <https://discourse.threejs.org/t/some-mixamo-models-are-broken-in-animation-others-not/45279>\
**Category:** Questions\
**Tags:** fbx-loader, loaders, animation, geometry\
**Created:** [November 29, 2022, 2:49am UTC](https://discourse.threejs.org/t/some-mixamo-models-are-broken-in-animation-others-not/45279 "2022-11-29T02:49:23Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![etm](https://yyz1.discourse-cdn.com/flex035/user_avatar/discourse.threejs.org/etm/32/31342_2.png) [@etm](https://discourse.threejs.org/u/etm)\
**Post date:** [November 29, 2022, 2:49am UTC](https://discourse.threejs.org/t/some-mixamo-models-are-broken-in-animation-others-not/45279/1 "2022-11-29T02:49:24Z")

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Hi guys, so I’m trying the FBXLoader module to import characters from [Mixamo](https://www.mixamo.com/#/?page=1&type=Character). But sometimes some models break when I play their animation – rigging out of whack.

Thing is, when I tried to play them inside [three.js editor](https://threejs.org/editor/), they works perfectly.

Normal:  
 ![image](https://canada1.discourse-cdn.com/flex035/uploads/threejs/original/3X/a/2/a2ce065c2d95f54f9824b3033736752652ea1918.jpeg)

Broken (default vs in animation):  
 ![image](https://canada1.discourse-cdn.com/flex035/uploads/threejs/original/3X/9/a/9ae2712133423c296d11f7811bcb626350c0110f.png) ![image](https://canada1.discourse-cdn.com/flex035/uploads/threejs/original/3X/e/0/e090ff7f24fffdaddfd1d76c2090dd4328f1e933.png)

I know there’s not much to check without a code snippet, but unfortunately I still don’t know the cause (because the animation-playing routines are practically calling `.play()`). So if anyone experienced this before or have a guess, please let me know.

The models (normal & broken): [Models - Google Drive](https://drive.google.com/drive/folders/1lbCQ-XfWYO4ZbBEn7RHGxYGLGDYz7asL?usp=sharing)

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<div class="post-metadata">

**Author:** ![etm](https://yyz1.discourse-cdn.com/flex035/user_avatar/discourse.threejs.org/etm/32/31342_2.png) [@etm](https://discourse.threejs.org/u/etm)\
**Post date:** [November 29, 2022, 1:15pm UTC](https://discourse.threejs.org/t/some-mixamo-models-are-broken-in-animation-others-not/45279/2 "2022-11-29T13:15:16Z")

</div>

Here is the skeleton preview of the models on animation. The broken ones (left & right) has strange new bones facing upward for some reason – on idle that bone doesn’t exist. While the normal ones (middle) stays the same.  
 ![image](https://canada1.discourse-cdn.com/flex035/uploads/threejs/original/3X/4/7/479d1884444be8963599f87410eb83bbd48bd4b6.png)

Also found out that the one with problematic rigging has extra bone to it called `mixamorigHips`:  
 ![image](https://canada1.discourse-cdn.com/flex035/uploads/threejs/original/3X/3/1/3142f6c9fcacbbf8ee97cce0d2312d5440b3458c.png)

Anyone has any idea what to do?