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Official Site: DC Comics

Amygdala is the alias of DC Comics character Aaron Helzinger, who is a sometime opponent of Batman. He has reduced mental capacity, is prone to outbursts of violence and has super-strength due to medical experimentation on his brain, chiefly the removal of his amygdala.

As demonstrated in Klüver-Bucy syndrome, individuals with lesion amygdalae in real life experience a wide range of emotions, including anger, but frequently in response to the wrong stimuli.

Anatomically, the amygdala refers to the bundle of nerve cells in the brain that control emotional associations of many kinds. Helzinger's amygdala cluster was removed in an attempt to cure him of his homicidal rage. This procedure resulted in Amygdala becoming exceedingly angry and was the opposite of what the surgery was supposed to achieve. Easily led due to his childlike nature, Amygdala has been the pawn of a number of Batman villains, but when properly medicated, he can be peaceful.

Amygdala first appeared in Shadow of the Bat #3 in 1992 during the story arc of the four-parter Batman: The Last Arkham which began the new line of comics. In the issue, Amygdala was forced to attack Batman by the maddened Jeremiah Arkham. Batman subdued Amygdala, but was then forced to face more inmates.

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