John Cena
From Jenny Everywhere Wiki
John Cena, also known as Green, was an individual who once became involved in a mystery scenario wherein individuals were accusing one another of doing something. While standing in front of the Doctor, Peter Griffin accused "Green" of doing something, but another Crewmate told him that Green wasn't in the game, with Peter responding with "Ah, crap.". (COMIC: Jenny Everywhere meets Peter Griffin)
Behind the scenes
John Cena being considered invisible is a reference to his well-known quote, "You can't see me!", which later became an internet meme, with people claiming him to be invisible.