Django is Remy and Emile's father and a major character of Ratatouille. A pragmatic leader concerned for future and wellness of his colony, he holds deep suspicion towards humans in general, and voices disapproval of Remy who constantly strives to move beyond being a mere rat and is close to a human named Linguini.
He was voiced by the late Brian Dennehy in English, and by Mugihito in Japanese.
His son, Remy, is gifted with a keen understanding of cuisine, which Django really doesn't understand, as well as a powerful sense of smell and taste. Django notices his son's gift of a strong smell when Remy grabs a poisonous apple core he was going to eat away from him. Because of this, Django gives his son the job of sniffing for rat poison, an assignment Remy is not thrilled to perform. Django is split apart from his son Remy when their rat colony is discovered by the home's owner, forcing Django and the rats to flee into the sewer. Django is later reunited with Remy, when Emile brings him back to the rat colony in their new home they moved into.
When Django hears that Remy has been cooking in the kitchen with humans, he is against it and gives Remy a warning that humans and rats will never get along. When Remy refuses to believe him Django shows his son an extermination shop with stuffed rats hanging on a bar, telling his son that those dead rats are testament for rats who get too close to humans. Django further lectures Remy that those dead rats too believed in humans exactly the way Remy trusts Linguini. But Remy is still not fully convinced. Later, Remy is captured by Skinner, in which Django and Emile help rescue him. Remy returns to the kitchen, where Linguini reveals the secret of Remy cooking by controlling his movements under his hat to the staff. Everyone is in disbelief and walks out of the kitchen, leaving Linguini helpless. Django finally sees his son's passion and determination to cook, and realizes that humans aren't that bad. As of this, he organizes the rest of the pack to help out in the kitchen. They lock Skinner and the Health Inspector into the storeroom when they try to interfere. Near the end, Django is sitting at mini tables located on a hedge of a window behind plants talking with other rats in his son's new restaurant, La Ratatouille.
Django is only referred to by name once in the film; While Remy is telling his father about his new living situation, another rat comes over and starts talking with Django, thus interrupting the conversation. Very faintly, the viewer can hear the rat say, "Hey, Django..." and proceeds in telling a joke, which makes him chuckle.