Although it has a misleading name, Godot Game Tools is a very cool Blender addon that makes working with Mixamo animations in Blender 2.8x extremely easy. This includes the ability to easily import and merge multiple animations from Mixamo, an otherwise frustrating task. Features of Godot Game Tools include:
– Batch Animations Bake In A Single File
– Character Armature Clean and Fixes for Better Export
– Animations Testing
– Add Automatic Root Motion For Model Export
– Automated NLA Tracks Insertion
– Animation Rename
Godot Game Tools is available as a free download on itch.io. See GGT in action, including how to install, in the video below.