Jonah Mitchell is a character in DEXTER. Jonah is a top-notch, high school student with a football career and a charming personality. At least, that's what he and the rest of the family have learned to show the rest of the world...when in fact he was tormented day in and day out by his abusive father, becoming the unfortunate target for his father's rage passed on from his own father (and Jonah's grandfather), Henry Mitchell. Later on in the series, we see him in a list of folders on Dr. Vogel's laptop, pointing out that he was once a patient of Dr. Vogel.