User blog comment:Tierhalibelbrylle/The Dark Side/@comment-10380701-20140711111158

Maki's evil side isn't really interesting since it's just a crazier version of her. Instead, let's talk Elena, literally the character I made who has reached peak goodness.

Helen Herzstein (Her surname translates to Stoneheart. That will make sense in a few sentences)

Appearance: Has shorter hair and a less formal outfit. Her eyes aren't as bright as the original.

History: Think of a scenario where Elena isn't as idealistic as she was. So she falls into despair rapidly and becomes crazed enough that she considers the entire world as her own enemy.

TL;DR Helen is Elena at the edge of cynicism.

Elena vs Helen

Elena: ...How pitiful... So this is the road that I will walk if I ever give up...

Helen: Open your eyes already, this world is cruel and merciless. Ugh, your idealism sickens me.

Elena: You open your eyes. Looking through jaded cynicism, you've lost sight of what the world truly is, the light of hope is still in your grasp. Reach for it!

Helen: Silence. I'll crush every glimmer of goodness within you. Then at your most absolute despair, I will ask, "Do you still believe in hope?".

Elena: And there is our difference. No matter how far you bring me to the brink of death, I will not surrender! I will save you from the depths of despair, even if it costs me my life!