Derek Cool (DerekJasper) is one of the main heroes in Macy's Parade Mysteries.
Derek is a die-hard parade fan, who loves the parades past and present (sometimes) but someone who cares for the history of the parade itself. Even for the telecasts, he finds more interesting despite the hate they get online on forum sites. For someone who wants to see more secrets of what the NBC telecasts ignores. It's one of his favorite times of the year.
Most if his appearance is based off Garfield the Cat, with black sunglasses and a red shirt with the text "Derek Cool" on it, similar to that of Snoopy's "Joe Cool" alter-ego.