Professor Elvin Gadd (Earth-2789)

"Ooof... I sure take a lot of knocks in this line of work. I'm getting too old for this ghost-catching tomfoolery. Anyway, nice to meet you. I'm Professor E. Gadd."

- Professor Elvin Gadd

Professor Elvin Gadd, often shortened to Professor E. Gadd or simply E. Gadd, is a scientist who founded Gadd Science, Incorporated. He speaks in constant gibberish and uses nonsense words such as "criminy", "hullabaloo", etc. in the middle os his sentences. His name is a pun on the archaic exclamation "egad," something that one says in surprise.