Continuity mistake: At Robot Storage Area 17, the door to storage has writing (3 words) on its window. When seen from the other side it has the number 101 on it. (00:10:50)
Continuity mistake: In the scene where Rock is trying to destroy Tima and the factory, the side parting in his hair frequently changes sides.
Answer: If anything, Mega Man was influenced by Metropolis--Mega Man came around in 1987 and Metropolis first appeared in manga form in 1949.