When the movie ended, I woke up and rewound it in order to watch the middle parts I missed and I have to admit that learning that Duke's friend Rex was not dead, but had actually survived and was now the evil doctor was quite a surprise. Oops! I'm sorry. I could cut my tongue out. I can't believe I let that slip.
So if you have an attachment to the comic book series then you will either be entertained by this movie or hate it like many comic enthusiasts do when a movie based on their childhood entertainment doesn't meet their expectations. Speaking of comic book fans, I hate it when I hear that the actors in a movie were big fans of a particular character that they play when they were kids. Forgive my incredulity, but I'll bet maybe 10% really were and the rest are just saying that to brown nose and get the part. I give GI Joe 5.9 stars.