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In addition to his graphic novel and novel work, Simons also painted backgrounds for animation, including Jackie Chan Adventures and Invader Zim. He painted both issues of Jhonen Vasquez's comic I Feel Sick. Simons also works with his wife, illustrator Tavisha Wolfgarth-Simons, writing, co-illustrating, and coloring comics and novels. The two currently produce several webcomics, including "@Tavicat" and "The Trinkkits of the Sad Circus by the Sea".