The Forgotten Titan

Hex woke up with no memory. She quickly befriends HIVE student Kyd Wykkyd and joins HIVE. Just when her life is starting to get normal(ish), she gets a special mission from Slade: kill the hero Speedy.
Everything gets flipped topsy turvy, and Hex begins to question why she's at HIVE. With a little help from Kyd (and some other friends), she leaves HIVE to find out who she is.
Even with all the fights and crazy going on, Hex still manages to find time to make friends with the original Titans, fall crazy in love with the one boy she can't stand, and kick some serious butt.