Headcase appears in 7 issues.
High school test subjects, experiment by Doctor Caligan. Foes to the Teen Titans.
The Legion of Doom is a vicious group of supervillains whose objective is the destruction of all superheroes and to rule all of Earth. While they have been so far unsuccessful, their power is undeniable and they remain a threat.
"Prime's Titans" are a group of "Anti-Teen Titans" lead and founded by Superboy-Prime.
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