Creating an IK Retargeter for a UE5 Mannequin

After completing bone-mapping (chain-mapping) for the Y_Bot, we will now retarget the bones to match the bones of the UE5 Mannequin character. The UE5 Mannequin characters (Manny and Quinn) have additional bones compared to the Mixamo character; these additional bones are not needed to make the Mixamo mocap animation work. We will rectify this issue in this section.

So, let’s learn how to use the IK Retargeter:

1. In the From_Mixamo folder, right-click and select Animation | IK Rig | IK Retargeter.
2. Rename the IK Retargeter to RTG_Manny and double-click to open it.
3. In the Pick IK Rig To Copy Animation From dialog box, choose IKRig_Y_Bot (as shown in Figure 8.26).

Figure 8.26: Choosing the IK Rig to copy the animation from

4. In the Select Target IK Rig (To Copy Animation To) panel, choose IK_Mannequin.

   You will now see the IK Retargeter Editor.

5. In the Details tab, in the Target...