Raven

 Rachel Roth, age 15. She has lived with her foster parents in Hub City since early childhood. From an early age, she is a quiet person mostly. That is, since her powers kicked in. At first, she just used to see visions of people dying, but one day she did something unthinkable. While sleeping, she transported herself to school. The university of science at hub city grew concerned with the dark matter activity.

Rachel fully got to know her powers when she killed a stalker. One day she had enough of a follower who had been at her for a few weeks. She decided to set a trap and confront him. But the stalker was much cleverer. He attacked her and then held her firmly. As he started licking her, she went all out and stabbed with a knife she manifested using dark matter. She truly knew what her power was. That was manipulating dark matter.

She can manipulate dark matter, summon wormholes and black holes, control the dark matter around different things, move items with her mind, and puppet the dead and the living.

She had practiced a lot with her powers and now she had managed to stop her from murdering people.

But her life changed after she met Garfield Logan a.k.a Beast Boy. Their meet was a one-in-a-trillion chance in a city where she could have met anyone. She met him which led to some cataclysmic chain reactions. She falls into a pit of conspiracy and for the first time in years, she feels fear. And that fear changes her inside out as she is then transformed into her best self. 

She got over her guilt of murder as eventually she saved an entire city and met people she could finally trust.