Captain N: The Game Master

Captain N: The Game Master is a cartoon from DiC Entertainment that had 34 episodes and featured many games from the NES and Game Boy, like Mega Man, Zelda, Metroid, Castlevia, and others, in which the characters interact together in Videoland. Mega Man is one the the main characters, but only three episodes features him and other Mega Man characters, telling stories from the first three Mega Man games, but with some differences.

Episodes featuring Mega Man
Only three episodes featured Mega Man games:

Episode 5: Mega Trouble in Megaland
This episode is based on Kid Icarus and the first Mega Man game. After the Kid Icarus part of the history, Dr. Wily steals and reprogram six Robot Master of Dr. Wright. Mega Man and the others main characters tries to stop him.

Episode 20: The Big Game
This episode is based on Mega Man 2 and California Games (a game with many sports). In the planet Metroid, Dr. Wily creates a energy machine and the eight Robot Masters from Mega Man 2. He works with Mother Brain (the final boss of the game Metroid) to energize the machine and had enough power to send the main characters to Earthquake Zone. The characters and the Robot Master fighted each other in a football game.

Episode 32: A Tale of Two Dogs
This episode is based only in Mega Man 3. Dr. Wily joins Dr. Wright to create a giant peacekeeping robot called Gamma. Dr. Wright get really happy to Dr. Wily come back to the good side, but actualy, Dr. Wily was planning to steal Gamma and use it for evil purposes. Mega Man and Kevin goes to Topland, a location in Megaland, to take the energy tank necessary to Gamma work.

Mega Man used the Hard Knuckle and the Shadow Blade in this episode, but the only Robot Master from Mega Man 3 that appeared in the cartoon was Top Man.

Mega Man characters
All characters from the cartoon are different from the original. Mega Man characters lives in Megaland, a part of Videoland. Here are the Mega Man characters differences from the originals:

Mega Man
Mega Man is a short big headed cyan robot (later changed to green) with a weird robotic voice. His "Mega Buster" is a small hole in his arm that is used similar to Spider-Man's web shooter. He has also a energy meter and other functions in his arms. Mega Man is one of the main characters of the cartoon.

Dr. Wright
Dr. Wright (Dr. Light) is a old dwarfed scientist with a big nose and less hair than the original.

Dr. Wily
Dr. Wily looks like the original, but dwarfed and a deformed head.

Mega Girl
Mega Girl is a pink and white Mega Man with blond hair created by Dr. Wright. It's probably Roll's version of this cartoon.

Rush
Rush looks a little like the original (but still different), and he is brown and orange instead of red and white. He only appeared in the episode "A Tale of Two Dogs", where he uses the Rush Rocket (Rush Jet).

Garbage Man
Garbage Man is a Robot Master that only appeared in this cartoon, on the episode "Mega Trouble in Megaland". He was create by Dr. Wright.

Big Eye
The Big Eye (the jumping enemy with one eye from the first game) don't changed much like the others, except now he is blue, his eye is yellow, and he is bigger (between 25-35 meters!).

Cuts Man
Cuts Man (Cut Man) is a green and orange robot with a blue face with psycho eyes, a nose and a mouth with 4 tooth in it. His Rolling Cutter is, literally, a big orange scissor in his head.

Fire Man
Fire Man is a red and silver fat robot, and his eyes are a small green visor with a torch in his small head, and under the visor he has a big silver face.

Elec Man
Elec Man seens as a thin humanoid dark blue robot with a thunder draw in the front of his body. His face looks like a human using a blue old mask.

Top Man
Top Man appeared in the episode "A Tale of Two Dogs". He was in the way of the energy tank necessary to Gamma work. He was defeated by Mega Man with only one punch of the Hard Knuckle.

Doc Robot
The Doc Robot is a very strange small and thin doctor robot with glasses and beard that assists Dr. Wily. He only uses Metal Man's Metal Blades to attack, and was smashed by a giant pipe he cutted with a Metal Blade.

Gamma
Gamma is now a giant yellow ball with eyes, blue arms, yellow legs and a blue belt with a smile draw on it. It has also a cockpit in the top of his head, where Dr. Wily controls it.