What is the most "edgy" Pokemon in your opinion?

Zoroar, definitely. Gray and red color scheme and a fox-like appearance. That's all that's needed for rebellious teenagers.

Of course, being edgy doesn't mean it's a bad design. It's all about taste and specs. If all Pokemon were the same, it would be pretty boring, right? For example, Darkrai fits his role perfectly, and even though he is dark, it shouldn't bother anyone considering his role in the world.