The main difference between these two versions is that both games have different champions and adversaries. In Mega Man, Dr. Light, the main character, is the champion while the opponent is Dr. Wily and his robots. The mega man universe is a top-rated franchise, and Mega Man is the original series in the franchise.
Dr. Light created Mega Man, and his purpose was to combat Dr. Wiley's evil robots. Mega Man's claim to fame is his talent for copying and adopting his rival robots' capabilities. The game was introduced on the Nintendo System in December 1987, and Mega Man X is the sequel and the second installment in the series.
This series focuses on the adventures of Mega Man X and Dr. Light. There are also new characters who serve as the series protagonist and antagonist. The original Mega Man can run, jump, climb, and shoot. Mega Man X can do all these things as well. However, Mega Man X can also mount and dash. The graphics in Mega Man X are also superior to the first series. This game was introduced on Super Nintendo in December 1993.