Wretched Egg (Shiro) DEATH BATTLE: Who can challenge the Origin of Sins

[Raven Forrest]

Hello my fellow manga and anime lovers, I need your help. You see, there is a show for a YouTube Channel (Screwattack) that's called Death Battle. (If you already know about Death Battle, then skip to next paragraph)What Death Battle is about is when they select 2 characters (with some kind of similarity or connection) and have them fight to the death. They first research (in-depth) the characters back stories and abilities, evaluate them, and play out a created (either by CG or Sprites). Once the battle is over and the winner comes out victorious, they shortly explain their results.

I need your guys help to select a opponent to face off against the Wretched Egg (otherwise Shiro) from Deadman Wonderland. Here is the criteria for what the other opponent is required to have:
To have a similar back story, or abilities
To be able to stand against her
The opponent or her can not over power each other easily

Thanks A lot to you who have helped me, I can't wait to see what will be an epic DEATH BATTLE!!!

[Ash]

Hi Raven Forrest,
I'm sure someone has already suggested her, but Lucy from Elfen Lied would be perfect.

[grant]

i suggest goku from dragon ball z with his kame hame ha

[Maxwell]

I don't know how similar they would be but for a tragic backstory and crazy creepy powers I'd say eren jaeger.