The Teen Titans have been change so much in the past 2 years, they have welcome many young heroes in their tower but there are also those who left although not permanently.
The first who left was Robin aka Richard Dick Grayson who throw out the mantle of Robin in order to become himself and now he is Nightwing, the Protector of Blüdhaven. Dick was still the leader of the group but with his work in Blüdhaven, the duty of leader often give to his successor of Robin Mantle aka Tim Drake who is the part of the new generation of Teen Titans.
Cyborg had been invite to join the justice League but he often remain in the tower when he does not have any League business.
Starfire, the innocent alien princess of Tamaran are staying with the Titans but as a guardian of the New generation Titans, She has break up with Nightwing for a year now and seem to get over it although her love for him still stay inside her the whole time.
And for Raven, like Starfire are still staying in the tower, the half-demon born has better control of her power now. She was still as calm as ever but not really happy, the truth is she is lonely, yes still have Starfire who sometime come to meditate with her and she certainly happy for that but there are still something that missing and that would be Beast Boy, The young jokester who always making a lame joke to make her smile.
Beast Boy is the only one who have been missing for this past two years. He has left for his original team, the Doom Patrol and no one have been able to contract him since he left. And that make Raven worry sick, though, she never admit it.
Since the time the Teen Titans has form, Raven and Beast Boy are the only two that can't communicate well with each other, well, she doesn't communicate well with anyone but with Beast Boy, they just think of being hate by each other. although they have a really bad start, things change. Their relationship have change so much since they met and they even go out to many of "not-a-date" as they call it.
The new generations of Teen Titans are Robin(Tim Drake), Super Boy(Corner Kent), Kid Flash(Bart Allen) and Wonder Girl(Cassandra Sandmark)