Charge Man (チャージマン,Chājiman?) is a Robot Master based on a steam locomotive, which is used by him as camouflage to make shipments to Dr. Wily. He is unique in that he is powered by coal and water, lowering his operating costs exponentially. His main attack, the Charge Kick, makes him throw a full-throttle kick at his maximum speed. He's also able to launch flaming pieces of coal from his smokestack.
He walks in an attempt to touch Mega Man and damage him. Just time a jump so Mega Man avoids him. He also can throw coal from his chimney so they fall in a random position, being invincible while doing that. Just move out of the way if the coal is about to fall on Mega Man. He can also attack by using the Charge Kick to tackle Mega Man, which must be avoided by timing a jump so he fails. He is also invincible while doing the Charge Kick. His weakness is the Power Stone, but it is very difficult to hit him with it. The best time to use it is when he comes walking at Mega Man while looking at him, and when he gets near him, use it. However, he still is invincible while doing the Charge Kick and while shooting coal if struck with it. The Mega Buster is also a better option, as it is easier to hit Charge Man with it.
In the manga, Charge Man appeared in the story "Holiday of Soldiers", where the eight Robot Masters from Mega Man 5 have part-time jobs at an amusement park to obtain money for Wily. He operates the train ride.
During the Stardroid's invasion of Earth in Mega Man Gigamix, Charge Man was tasked with providing Mega Man with a quick escape against Saturn, during which he demonstrated the use of a coalbox-like car to haul passengers in.
Charge Man is one of two Robot Master from Mega Man 5 that did not appear in the Mega Man cartoon series. The other is Napalm Man, who while also not appearing in any episode, did make a brief cameo in the intro.
Charge Man's dislike of trendy designs likely results from his completely practical design, a characteristic shared with real steam locomotives. This also hints at the fact that diesel engines replaced steam locomotives, as early diesels were designed to look streamlined and modern - the antithesis of a steam engine.