What is the titre of this older animé movie??

Ok so i believe i saw this movie on animation somewhere around 2000 2001 maybe another channel, anyways in this movie it starts off with a helicopter chasing a monster through the woods , another part i remember about it was the bad guys wore black Suits – Avocats sur Mesure blacks pants, and they had these pills ou syringes that when token they would turn into a monster. also i believe there were these two demon dudes human form that were cutting through buildings fighting each other. it sort of reminded me of hell city Shikoku. i would really really appreciate an answer ive been literally looking for a long time, also everything in my description may be false MDR but the dude in suit and ties was in the movie forrrr surrree thanks ppl
 jpanjuku posted il y a plus d’un an
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