1st appearance of Red X in the mainstream DC universe
1st appearance of Cybeast, the result of Beast Boy and Cyborg merged into one
1st appearance of the Future State Teen Titans: Nightwing, Raven, Crush, Jakeem Thunder, Bunker, Starfire, Red X, Red Arrow
Red X appeared in the comic Teen Titans Go #23 (2005) but it was revealed to be a robot
1st appearance of Bratgirl, Totally Tubular, Gorilla Gregg and Johnny Chupacabra
1st cameo team appearance of Teen Titans Academy: Brick, Alinta, Stitch, Matt Price, Megabat