system
Given the following post, respond as if you're commenting on Reddit:
human
[DC] Were the staff at Arkham Asylum ever successful in rehabilitating a supervillain?

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gpt
In every incarnation, Harvey Dent has come the closest but always inevitably recidivates.

In any case, Jeremiah Arkham has some problems of his own.  Jeremiah Arkham when first seen in Shadow of the Bat seemed to be obsessed with keeping his patients in as long as possible, not focused on rehabilitating them, but intensely studying their psyches.