Issue with Neck Deformation When Using Custom Body Template in MetaHuman Creator (UE5.6)

[FryFree]

I am experiencing a persistent issue when using the new MetaHuman Creator inside Unreal Engine 5.6 with a custom body created in Wrap and Maya.

When I import my custom body as a Template in MetaHuman Creator, the neck area becomes stretched and deformed — specifically, the “neck_01” bone shifts upward significantly.

This happens even though:

• The proportions of my body mesh match the original MetaHuman body.
• The seam between the head and body aligns perfectly in Maya.

Interestingly, if I only import my custom head and use the default MetaHuman body, everything aligns perfectly. The problem appears only when the body Template is applied, as it seems to override my neck area to match the built-in MetaHuman proportions, causing distortion.

I have confirmed:

• Mesh topology around the neck matches the original MetaHuman topology.
• Pivot positions and world coordinates for neck_01 match the standard model.

Could you please advise:

1. Is there a known way to prevent MetaHuman Creator from rescaling the neck area when using a custom body?
2. Are there specific topology or marker requirements for the neck region so that neck_01 stays in the correct position?
3. Is this behavior expected in 5.6, or is it a bug that should be reported?

[Traggey]

I’ve been experiencing the exact same issue, custom head and body meshes, modelled them both to match eprfectly, have confirmed all the thingies, and yet when brought in as a template body, the neck gets all kinds of funky

[ROCKENROLLA471 (ROCKY MAREYA)]

Hey guys.. Disable the alignment , set it to NONE and disable ADAPT NECK

[hockwell33]

(post deleted by author)

[Anuj_Abhiwan]

Neck deformation issues in MetaHuman Creator (UE5.6) with a custom body template usually occur due to mismatched skeleton weights or rig adjustments. To fix it:

1. Check Skin Weights: Ensure the neck and head vertices are properly weighted to the correct bones.
2. Adjust Skeleton: Align the custom body skeleton with the MetaHuman rig.
3. Use Pose Correctives: Apply corrective blend shapes or pose morphs to smooth deformation.
4. Test with Animation: Preview with common head and neck movements to ensure proper deformation.

[HCTZ (红差探长)]

匹配设置这里改成这样试一下嘛

[The_Distiller]

The ‘adapt neck’ option seems to be missing in 5.7.

[hockwell33]

@Anuj_Abhiwan

Neck deformation issues in MetaHuman Creator (UE5.6) with a custom body template usually occur due to mismatched skeleton weights or rig adjustments. To fix it:

1. Check Skin Weights: Ensure the neck and head vertices are properly weighted to the correct bones.
2. Adjust Skeleton: Align the custom body skeleton with the MetaHuman rig.
3. Use Pose Correctives: Apply corrective blend shapes or pose morphs to smooth deformation.
4. Test with Animation: Preview with common head and neck movements to ensure proper deformation.

thanks mate ive tried somehow it worked for me really ,helpfull