4. Thea Queen
When it comes to a character that is hurting and lashing out at the world, Thea Queen is at the top of the list. She is dealing with the death of her brother and father, trying to find her way in the world. And even when she got her brother back, there was still a level of pain that was hard to just let go of.
As viewers, we had the pleasure of watching Thea grow up and go from a troubled young woman into an adult training with the League of Assassins. And the fact that she also had to watch her own mother get killed right in front of her meant that she was bound to come so much more than just another strong, independent woman.
Thea Queen was trained by none other than Malcolm Merlyn. She was a member of Team Arrow. And she was a woman in love. Her relationship with Roy was one that helped her grow, even as it was simply not sustainable in the series.
While there are times when it feels like Thea was underutilized, when they did use her in the show, she was a fierce woman with a determination that was easily in line with that of her brother, Oliver. And I love the fact that she is as much of a fighter as her brother, making her a worthy adversary for anyone trying to take on our heroes.