Im Yoona is a bloodbender.A prime criminal some people might say."Why is she a criminal?"some people might ask.Well,she's been taught to control her powers ever since she was a child by all her masters.She's a criminal because she basically the life out of people.And by that, I mean she bloodbends people and then throws them into a lair in her home and treats them like prisoners.She became like this after some prisoners escaped their prison and went on a killing spree.They murdered a total of  20 people before they got toYoona's parents. But it was too late.Yoona came back home right when the prisoners were about to flee her home.She trapped them in her lair where she trained bloodbending.She made them suffer until they died.She goes and possesses "criminals'' in the city.If she sees someone drop a penny and someone else picks it up, she captures them.She doesn't want any ''criminals'' in the world so they couldn't ever kill anybody ever again.But she doesn't realize she's just killing people herself,innocent people in fact.

But what happens when one of her old masters who used to train her reads a newspaper that his former student is a criminal.He sends twelve boys who possess  supernatural powers to bring her back to being the perfect girl and student she used to be.But will she happen to capture them too?

Yoona admits she is hurt by mistreating the captives,but when bad memories form in your brain, you tend to become crazy.

Im Yoona is

The 22nd Puppetmaster.