This may shed some light on Kevin Monroe's recent departure from Imagi/Gatchaman:
Near the end of God of War 2, it was definitely time to do something different. I learned from a good friend Charles Lee that Imagi was making "Gatchaman". This was a dream project for me ever since I was a little kid running in the back streets of Taiwan as G1 (the leader of the Gatchaman team), protecting our neighborhood from alien invasion. This old 70's cartoon was called "Battle of the Planets" in the US, or G-Force. I loved it... I got to help envision Gatchaman for our times. I joined Imagi for about a year and a half---worked on some "look of picture" images, but mostly spent time designing the characters. The original vision for the film was fun and a bit edgy---appealed to me. The project's been through lots of changes, rewrites (like any film), ended up with a different director recently. The vision's changed since I first joined, and seems to be going towards a younger Power Rangers audience---I wanted to see a Gatchaman that I would love to see, and didn't want to see it go this direction, so I departed from Imagi and took an Art Directing/Character Designing gig on Thundercats.
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http://charliewen.typepad.com/