This is Red X, he is not a proper Teen Titan, although his character was made up by the leader - Robin, in order to get at Slade(the main villian)
Later is the series after Robin finishes with Red X and locks it up, someone breaks into the holding cell and steals the suit, and its gadgets. With this we get about 3 more episodes and a new villian.
There is the history of this character.

My last picture as a noob artist, people you have entered to the SUPER INSANELY ULTIMATELY CRAZILY OLD pictures, these are so old, im not even gonna guess at the making time and/or dates of creation(although they are on the picture but I'm to lazy to look) Forgive any writing you find on these(and the Yamato picture) idk what I was thinking by putting them, but hey I was still new to the game.

This is the end of my Teen Titan series drawings, don't be to harsh to them, I made these when I was 12-13(this one was made not very long after I turned 13 so its the only one made at 13th year of age)

For the third time I AM PUTTING THESE FROM NEWEST TO OLDEST DO NOT GO BY WHEN THEY WERE POSTED FOR BEING WHEN THEY WERE MADE!!! thank you :D