One time I forgot to turn my Gravity off...

Changing gears for a second, think about this.

In CRISIS: Equestria, Rainbow Dash can turn herself into lightning.

Grayscale Force's powers allow her to alter the weight of objects on a whim. Her entire fighting style depends on her having that air dominance that comes with keeping her opponent pinned down.

But since lightning is essentially energy--therefore, no mass--RD can theoretically become immune to Grayscale's gravity control. And, taking into account Grayscale's apparent large size, coupled with her aforementioned reliance on controlling the fight by keeping her opponent pinned and slowed down, Rainbow Dash may be the one to finally give Grayscale Force a run for her money.

How she reacts to that turn of events is up to the author, of course, but my personal guess is that she becomes The Joker.

And that is the story of how I drew that one Crazescale Force face in the corner of this page.

Grayscale Force and CRISIS: Equestria were both created by ~GanonFLCL

I claim no ownership to the Elements of Discord, My Little Pony, The Joker, Grayscale's torturous feeling of eternal crushing emptiness, or Swag.