I am using Unreal Engine version 4.18, but it should be similar in recent engine versions. The older versions of Unreal Engine 4 it just doesn’t work, apparently, but the later versions, I got it to mostly work by searching online, through the Udemy Blender Character Creator course, and through lots of trial-and-error. Mirror through the Mirror button in Skin Atelier.Searching online, I see many (like me) have wanted to work on characters in Blender by exporting the Mannequin skeleton provided by Epic, but there are problems with doing this. Select thigh (whichever side) and ball joints (same side) and hit the Reverse Foot buttong in Rig Atelier. Repeat the same process to create RF controls for legs.Hit Mirror Button in Skin Atelier to mirror IK controller To add IK chains select upperarm joint (whichever side) and control select hand joint (same side) an hit the IK icon in the Rig Atelier.This should reset the channel value without moving your Mannequin. Type in 0 in the X rotation channel in the Transform dialog.

Spinner is greyed out but Transform channels can still be edited. To reset X rotation value, activate Pivot Rotation Mode in Bind Pose.X rotation channel (first in the list) should still be at -90. Check Transform panel, you should now see Y rotation channel at 0.Discrete step value can be changed in Spinner preferences.

You can use that in combiantion with the Discrete Transformation Mode option in Spinner.

Press O to switch Spinner to Rotation Mode to do that and make sure Pivot Edition Mode is turned off.

In Bind Pose, rotate Mannequin to face the right direction.

Select all joints through Picker and activate Compensate scale in Properties dialog.

Make sure you are in Rigging Mode (TAB key to switch between Rigging and Animation Mode).

Ue4 mannequin fbx download