|First Appearance||Dr. Luigi (2013)|
Dr. Luigi is the persona that Luigi adopts in the Dr. Mario series of puzzle games. Dr. Luigi first debuted in the 2013 title Dr. Luigi, the final game released as part of the "Year of Luigi" celebration made to recognize 30 years since Luigi's debut. Dr. Luigi works alongside his brother and Nurse Toadstool in the virus research lab at the Mushroom Kingdom Hospital.
Dr. Luigi appears as an unlockable character in Super Smash Bros.: Going for Gold, and is a clone of Dr. Mario.
Dr. Luigi is a main character in Dr. Mario: Virus Chronicles along with Dr. Mario and is a playable character. He is better in the overworld, but weaker in battles.