Professor E. Gadd

Professor Elvin Gadd, more known as Professor E. Gadd or E. Gadd (for short), is, in the Mario series a small and old experienced researcher with knowledge in various domains, especially the paranormal, who can help Luigi and Mario with his knowledge. In real the Mario games, he appears in the series "Luigi's Mansion" and in the two first games of the "Mario & Luigi" series ("Superstar Saga" and "Partners in Time"). In SuperMarioGlitchy4's bloopers, he appeared only in the videos "Time Travel Tells" and "P.O.I.S.O.N.E.D. Computer".

Appearances in SuperMarioGlitchy4's bloopers
Professor E. Gadd appeared only in the videos "Time Travel Tells" and "P.O.I.S.O.N.E.D. Computer".

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Trivia

 * His name "E. Gadd" is misspelled as "E gad" (with only one d instead of two) in the first video of SMG4 where he appeared.
 * In the video game "Super Mario Sunshine", he doesn't appear physically, but a few of his inventions are seen, like F.L.U.D.D. (used by Mario).