At least I think that's what it was, I remember the movie having a synopsis like this. The movie starts on regular earth. It's about to be invaded by evil being from another planet. The planets last hope is a mech (go figure) however the president (secretary of defense? someone highup in the government that's important.) This woman is shot with a poison bullet, by an assasin while a bodyguard (the cockie main character dude) kills the assassin. The woman is put into a deep coma by an "infection" and the only way to treat is to send someone who knows how to pilot the mech into her bloodstream. The cocky dude just happens to be that guy. They shrink and tell him he has until the invading army arrive to eliminate the virus. They also send in a mech piloted by a humanoid robot. They get into a fight with the infection which turns out to be a complete race of people that have their own mechs lead some random chick. The movie goes on from there with th cocky dude exploring the microscopic world. Any idea what movie this is? I would like to know so I can find it again cause when I was a kid it was hella entertaining to watch. Thanks guys.