He has contributed to various animated series, including Cowboy Bebop, Astro Boy, FLCL, Stitch & Ai, and Voltron.
Handler is noted for his role as a story editor on the 2003 Astro Boy series, marking a significant collaboration between American and Japanese production teams.
[1][2][3] Born and raised in Los Angeles, California, Handler formed the Subject to Change Theatre Troupe and was active in various political causes.
He holds two master's degrees from the University of Southern California in directing theatre and writing for film and television.
[4] Handler's career includes writing for American animated series such as Teenage Mutant Ninja Turtles, Widget the World Watcher, and Denver, the Last Dinosaur.