I figured out how to add non-tf2 native characters in the Source Filmmaker before. But now, I figured out hox to animate them completely! 😀
Just a little hint: if the whole body rotates in the preview, just keep rotating until you notice the bone that’s rotated is in the CORRECT position: when you play back, it will not make the body look rotated. 😉
Keep an eye out for a video soon.