Gregory also has some artistic talent, as seen when Cassie collects some of his comics.

In his quest to leave Freddy Fazbear's Mega Pizzaplex before closure, he prefers to hide from Vanessa instead of accepting her help, as he is doubtful of her intentions in spite of her position as a security guard and Glamrock Freddy's prompt to trust her. On the other hand, he is cautious to the point that he appears to be distrustful. Likewise, he will immediately complain to anyone if he dislikes something they're doing, such as when he told Glamrock Freddy to shut up in a slightly aggressive tone. Usually, whenever he gets slightly annoyed or angry, like when he got a 'crappy' or 'stupid' item or realized he had five more hours to survive, he openly makes a comment to showcase his rage. Gregory is an irritated and outspoken kid. For footwear, he wears white socks as well as white, red and cyan-colored sneakers with dark grey soles.

He wears tan cargo shorts that go down to his knees. He also wears a white shirt underneath his shirt. He wears a blue t-shirt with a pale blue collar and two white stripes positioned horizontally across his chest (as seen in the poster). He has bandages on both his right cheek and his left knee. Gregory is a small, thin child with apricot skin, messy brown hair and brown eyes.