Luigi has appeared in every Mario role-playing games. While he originally made a cameo appearance in the end credits of Super Mario RPG, he appears more prominently in the Paper Mario series. He is a non-playable character in the original Paper Mario. In the sequel Paper Mario: The Thousand-Year Door, he appears yet again as a non-player character, going on a separate adventure from Mario's. Super Paper Mario features him as a playable character after he is initially brainwashed into working for the antagonist under the name "". In Paper Mario: Sticker Star and Paper Mario: Color Splash, Luigi plays a minor role and can be found in the background of certain levels for a coin reward. In Color Splash, Luigi appears at the end of the game driving a kart and helps Mario reach Bowser's Castle. In Paper Mario: The Origami King, he once again helps Mario by retrieving the keys of Peach's Castle himself. The Mario & Luigi series features Luigi as a main protagonist; the events of the games focus on him and his brother Mario. He has appeared in all seven Mario & Luigi games.
Luigi has appeared in every Mario role-playing games. While he originally made a cameo appearance in the end credits of Super Mario RPG, he appears more prominently in the Paper Mario series. He is a non-playable character in the original Paper Mario. In the sequel Paper Mario: The Thousand-Year Door, he appears yet again as a non-player character, going on a separate adventure from Mario's. Super Paper Mario features him as a playable character after he is initially brainwashed into working for the antagonist under the name "". In Paper Mario: Sticker Star and Paper Mario: Color Splash, Luigi plays a minor role and can be found in the background of certain levels for a coin reward. In Color Splash, Luigi appears at the end of the game driving a kart and helps Mario reach Bowser's Castle. In Paper Mario: The Origami King he once again helps Mario by retrieving the keys of Peach's Castle himself. The Mario & Luigi series features Luigi as a main protagonist; the events of the games focus on him and his brother Mario. He has appeared in all seven Mario & Luigi games.