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"And thus the H.I.V.E Five was no more."
You make it sound as if they died. The Titans have been shown to survive the freezing process several times, so couldn't the H.I.V.E. Five theoretically resurface later on? For that matter, didn't they resurface in the tie-in comic 'Teen Titans Go!' ?
In the comic the H.I.V.E. five may had continued after the Brotherhood of Evil Arc, due to some discrepances in the comic and the show, and cancellation of the Teen Titans animated show, no one can be sure if the H.I.V.E Five continued existing in the show. For now is extremely safe to say they are over.
The comic and the animated series happen to be somewhat different in some cases.