Researcher

"Researcher goes to the parks, talks to a few people, and tries not to draw any attention to himself. He'll just ask three or four families if they've seen "his friend", who's wearing a "funny mask"."

- Room Zero

Researcher is a human who frequently visited Disney parks looking for Gascots and has overheard a child asking their mother for a Goofy gas mask at a Disney park (presumably Disney World).

It is unknown whether or not Disney is pursuing him, where he lives, or if he is still alive.