Okay, I've found professor E. Gadd in Super Mario Sunshine. You know that old guy in Noki Bay? Well, he's Gadd in disguise. Notice how he has the glasses, a hat to cover up his hair, and he seems to know you, even though you've never met him. Although, it seems as though he doesn't want you to know who he is, so he told people not to tell Mario. That's why in Story one in Noki Bay, The Noki up at the top calls him his teacher, then, realizing he made a mistake, calls him Grandpa. One more thing: he is the only Noki (other than the pipe-playing one in Pinna Park) that doesn't curl up into his shell when you spray him.
