Codex Gamicus

Dr. Mario.png
Dr. Mario as he appears in Super Smash Bros. for Nintendo 3DS/Wii U

Game Series Dr. Mario
First Appearance Dr. Mario (1990)
Alias: Doctor Mario
Alter Ego: Mario
Japanese Name: Dr. マリオ Dokutā Mario
Occupation: Doctor
Nationality: Italian
Species: Human
Gender: Male
Dis-Likes: Viruses
Family: Luigi (Brother)
Home: Mushroom Kingdom
Weapon(s): Megavitamins
Voice Actor(s): Charles Martinet
Trademark: Traditional doctor garb

Dr. Mario is Mario as he appears in the few Dr. Mario games. He is not really a separate character, in the same way Young Link is not a separate character from Link. The only reason Mario was dressed up as a doctor is because it would let them use the image of pills and viruses, which is a more interesting way of making a puzzle game than just using normal colored blocks.

It's just Mario playing dress up. He appears in Super Smash Bros. Melee as an unlockable character as a Mario clone. Instead of fireballs, he throws Megavitamins. Otherwise, he's slower than Mario, but stronger.