| HOLY MAMA!|
|Friends||Mario, Luigi, Peach, Yoshi, Toad, Donkey Kong, Diddy Kong, Wario, Waluigi|
|Enemies||Boo, Bowser, Bowser Jr, The Koopa Troop, The Clones|
|Likes||Mario, Luigi, Peach, Yoshi, and Toad|
|Hates||Wario and Waluigi's Clone, Boo, Bowser, Bowser Jr.|
|Plush Player||Plush Bro #1|
Professor Elvin Gadd is a friend of the Mario Bros. He is constantly making crazy machinery. He built a time machine and a clone machine in Wario and Waluigi's Super Adventures. The time machine helped the Wario Bros and friends go back in time to stop Shadow from being created, and the clone machine cloned the Wario Bros.
- E. Gadd had to be cut out of paper since there is no plush of him yet.
- E. Gadd first appeared in Wario and Waluigi's Super Adventures Ep. 3-1: Cloned! as the creator of the evil clone machine.