Hello, Spine has no native noise modifier, but if you're keen on programming, you could probably export a json of the animation and randomize the coordinates, then reimport the animation in Spine probably, or just attempt to do this at runtime, for example randomizing the amount of animation alpha within a certain range. I love using the Adjust
and Offset
buttons to add some quick little noise after finishing an animation for example.
Dopesheet - Spine User Guide: Key Adjust
Preview - Spine User Guide: Alpha