Professor Elvin Gadd

Professor Elvin Gadd is a non-playable character in a number of Mario games. He made his first appearance in Luigi's Mansion, in which he introduces Luigi to the problem of the ghosts in the mansion and gives him the Poltergust 3000 to enable him to rescue his brother, Mario. The professor has another fairly large role in the story of Super Mario Sunshine, where E. Gadd invents the F.L.U.D.D. for Mario's use in cleaning up Isle Delfino. In Mario & Luigi: Partners in Time, he plays an equally important part, being the inventor of the time machine that led to the capture of Princess Peach.