While a lot of things are really done well in the New 52, one of the things that was done horrible was the four additional characters that are going to be added to the Teen Titans. To be honest I don't really like them at all, with perhaps the exception of Solstice. Bunker is okay, but kind of meh and Skitter is just horrible. However there are loads of previously introduced characters that could do the job correctly. First this purpose I won't be using characters already considered a Titans staple like Beast Boy, Raven and even the new Aqualad.

• Kid/Red Devil - His character has always had a lot of potential and it is beneficial that his origin doesn't even need to have anything to do with Blue Devil, we can just completely cross him out and still have a beautiful origin story. He has diverse powers that don't match anything that the team has and he also has a diverse personality.
• Damage - Though he never was part of the Teen titans, only part of the Titans when they had the Vol 1, he is still an interesting character with a deep backstory. His power set is sufficiently diverse and he brings a lot to the table, specially if we're talking post-Scarring.
• Lilith Clay - It sucks that Lilith hasn't done anything in the past 10 or 15 years, but she's a BAMF and she needs to come back.