I based this from an art picture of the Dark/Mirror Meta Knight from Kirby and the amazing Mirror.
I am not to good at Texture hacks, but I tried my best to make it as close as I could.

This is just a texture hack, so no wifi desync.
I also included the CSP I made for the preview.
EDIT: I added in a battle portrait too!

Please ask before you use this for an edit.
Thank you.
I hope you enjoy.

Here is the art picture I based it upon:

http://images3.wikia.nocookie.net/__cb20080213141424/kirby/en/images/7/79/DARK_Meta_Knight.JPG