I started thinking on "how would my most beloved Dark-type pokemon look with a megaevolution?". Welp! Here's the answer! Or at least my rendition of it hehehe Honestly I love how it came out! NINTENDO ARE YOU THERE?! LOOK AT THIS!!
Darkrai keeps his Dark type and gets the ghost type added! Also his stats increase this way: HP 100 Attack 90 Defense 90 Special Attack 190 Special Defense 90 Speed 140
