Elvin Gadd (past)

"Oh, criminy, I have guests! I was so caught up in my research I didn't notice you."

- Kakono Oya Mā-hakase

Kakono Oya Mā-hakase (過去のオヤ・マー博士 ) is the younger version of Professor Elvin Gadd who appears in Mario & Luigi: Partners in Time, identical in appearance to his older self, with the exception of his hair being black, his voice being higher pitched and having no wrinkles on his face. When translated, his name means "Professor E. Gadd of the past"; this naming convention is used in Toadsworth the Younger's Japanese name. Kakono Oya Mā-hakase is encountered in his lab on Thwomp Volcano as it is erupting, studying Thwomps and the history of the volcano itself. During the eruption, Kakono Oya Mā-hakase's lab is destroyed by Thwomps that fall through the building, including a massive, flaming one that is about to explode. Seeing Baby Mario douse the giant Thwomp, the memories of his present-day self suddenly start to be rearranged, and he has the idea of building the Hydrogush 4000.

Afterward, Kakono Oya Mā-hakase mentions that he plans on relocating to an affordable lab at the edge of Boo Woods for "paranormal research", a reference to Luigi's Mansion, and he is not seen again for the rest of the game.

Quotes

 * "Oh, criminy, I have guests! I was so caught up in my research I didn't notice you."
 * "Quick! We've gotta put out the flames! Water! Water! Spray water on the fire! I know there's a water valve around here somewhere!"
 * "Don't you sweat it, though. I hear there's an affordable lab at the edge of Boo Woods."

Trivia

 * Of all the characters who have younger selves, Kakono Oya Mā-hakase is the only one that does not interact with his present-day self.