Darcy may SEEM like just an evil Marcy at first...but then ya realize that she is truly just an evil being.

She takes delight in conquering, she's filled with brilliant minds during a time where conquering was NORMAL. Including kings and warlords who believe conquering is the most important thing in their lives!

And finally, The Core was MADE for evil. Quite literally created by arrogance and greed of Amphibia at the time.

It's honestly eerie. Makes her more scary than I thought. XD