Dr. Light

Dr. Thomas Light is a character from the  series. He attended the same university as Albert W. Wily, and is the creator of Mega Man and various other robot characters. In the Mario franchise, he serves as Mario's family doctor, and in general as a knowledgeable man to ask for help. Appearing in three Club Nintendo comics, Light's various inventions and troubleshootings differ a lot in their efficiency.

Captain N: The Game Master
Dr. Light, wherein he was called Dr. Wright, appeared in Captain N: The Game Master, voiced by Ian James Corlett.

"Super Mario: Die Verwandlung"
Dr. Light makes his debut in the Mario franchise in the Club Nintendo magazine comic, "Super Mario: Die Verwandlung". In this appearance, Dr. Light is portrayed much differently from the Mega Man games: he is also a plastic surgeon as well, and is highly absentminded. He is assisted by Mega Man in his office.

Mario calls Dr. Light for help when he finds that his face became pixelated overnight. When Mario enters Dr. Light's office with a bag over his head, he confuses the plumber with Link and thinks he came to complain about his surgery. His plan to cure Mario involves creating a duplicate of him and them fusing the two, which fails when the attempt to duplicate Mario creates Wario instead. Wario then begins wreaking havoc and breaks out of the lab, but is eventually recaptured by Mario, Mega Man and Dr. Light. He finally solves the crisis by having Mario and Wario both hold an SNES controller and press the Start button simultaneously; Wario disappears, and Mario returns to his normal form, allowing Dr. Light to properly recognize him. The end of the comic shows Dr. Light answering a call from Luigi, who claims to have turned black-and-white, eliciting a groan from the three of them.

"Mario in Mariozilla"
Dr. Light later appeared in the comic "Mario in Mariozilla". He lives in the Empire State Building, doing research together with Link. Once again, Mario calls him to solve a problem: one of Kamek's spells caused him to grow to a huge size. After recommending that the giant Mario put on a "magic cap" (which turns out to be another paper bag), Light's only advice is to track Kamek down, as he is the only one who can turn him back. Later in the story, the power of Kamek's broom shrinks him and Mario to a tiny size, and they are eaten by Yoshi. Dr. Light tries to free them by flipping Yoshi over and shaking him; when that fails, he theorizes that Yoshi could lay an egg containing both Mario and Kamek back to light. The plan works, and Light then turns them back to their normal size using a special magnifying glass.

"Blast Corps in Yoshis Knallkekse"
In "Blast Corps in Yoshis Knallkekse," Dr. Light (translated as Dr. Lichtblitz) appears as a hard-working, serious man. After Kamek hexes Yoshi's truck full of cookies so that the truck begins driving on its own and the cookies cause anyone who eats them to go crazy, Yoshi calls Dr. Light for help finding a remedy. Dr. Light succeeds and eventually arrives via helicopter in time to deliver the remedy to the city where the delivery was meant to arrive, containing the epidemic.

Super Smash Bros. series
In Super Smash Bros. for Wii U, Dr. Light appears as a collectible trophy.

In Super Smash Bros. Ultimate, Dr. Light appears as a spirit.