 Aron Warner, the producer of "Tank Girl", suggested he join DreamWorks Animation.After initially being uninterested, Ramsey joined DreamWorks as a story artist for "Shrek the Third" and "Shrek the Halls".In 2012 he directed "Rise of the Guardians", based on William Joyce's "The Guardians of Childhood" books, making him the first African-American to direct a big budget animated feature.