Romas Kukalis was one of the illustrators who worked to design artwork for the Animorphs series. He illustrated all four chronicles books: the Andalite Chronicles, the Hork-Bajir Chronicles , the Ellimist Chronicles, and VISSER. He also illustrated a Animorphs aliens poster that came with the Animorphs 2000 Calendar. Work outside of Animorphs includes other Sci-Fi books and Magic the Gathering game cards. David Mattingly is the other main Animorphs cover artist -he illustrated most of the rest of the series, including Books 3-54 and the Megamorphs.