Anime movie I saw as a teenager in the 1990s when the Sci-Fi channel used to show Anime Saturday mornings. All I remember it the first scene when a teen/man in a bio-suit facing an army of robots to defend a city alone; setting is post-apocalyptical future. The 1st robot he kills he punches his fist through the chest out the back like it was paper. Then he alone destroys the rest of the army. Seems like he is the usual defender of the city.