Need help, can't remember the name of movie?

Can't remember but I think I've seen it back in 2003-2005. This movie is rated PG or PG 13. It has final fantasy graphic like Advert Children, but not part of the Final Fantasy. It took place in futuristic time

I remember that in beginning, it showed a short battle between the rebel soldiers and the combination of well-equipped solders and mech. There was this govt. general/commander who was wearing heavy armor. He was talking to officers when a surviving rebel young age man fired his sniper at the general/commander but the armor shoulder blocked the shot.

The rebel got captured and general/commander decided to take him as prisoner and parade him around in the city as a sign of victory. General/commander has a daughter who has a flying robotic chick (baby chicken) as pet.

After talking with her father, a daughter goes to parade. Later, a rebel regained his consciousness and escaped from 4 legs mech and took daughter as a hostage. They ran away to some low class section of super giant city.

They suddenly became friends and daughter went home, have argument with her father and some annoying politician who have long black hair and is always escorted by some tall robotic looking figures in long black trench coat and have metallic looking claws.

In the end of movie, this politician turned out to be greedy and revealed his back to be covered by bunch of red glowing leeches which he used them to get blood from general/commander daughter to pilot robot but daughter us