I'm working on an animated/live action short.  I have a scene where a robot character walks across a black reflective tabletop.  All the live action props and actors are reflected in the tabletop, so the robot must have reflections to be convincing.

I'm compositing the finished PGN sequence in After Effects so I have lots of room for manipulation.  I found the easiest way is to dupe my figure, rotate him 180 degrees and make a mirrior image of the original placed feet to feet.  But, of course, the movement is left to right incorrect.  As the top figure's right leg moves, the "reflection" figure has to move its left leg.

Is there some way to "reverse" anination left to right?  Some...easy....way?