Tonio Trussardi

Antonio "Tonio" Trussardi is a professional chef of an Italian restaurant named Trattoria Trussardi at the edge of the town of Morioh. Since he runs the entire business alone, he can only serve up to two tables at a time.

Appearance/Personality
Tonio has a charismatic and courteous personality – unless someone dares to de-sanitize his kitchen, in which case he turns vicious. His ambition is to serve his customers tasty and especially healthy delicacies.

History
Tonio did extensive studies in cuisines all around the world, and is extremely proud and confident in the skills he accumulated. During his travels around the world he developed his stand Pearl Jam, allowing a much better cooking ability, but no one in his country Italy recognized his new ability. Due to being too young he couldn't open his restaurant in there, so he traveled to Morioh where the competition between restaurants is more intense and his chances were bigger.

Diamond is Unbreakable
Okuyasu Nijimura and Josuke Higashikata found Tonio's restaurant in Morioh and decided to visit it. Tonio presents himself to be different from other chefs, as he doesn't have a menu and the food he prepares is decided by himself after examining his customer's hands to determine what their ailments are. He examines Okuyasu, determining that Okuyasu had diarrhea, stiff shoulders, had only 4 hours of sleep and athelete's foot, and serves him food to make him feel better, but Josuke grows suspicious of him after several weird incidents with Okuyasu after eating the food. Okuyasu's eyes water uncontrollably after drinking African mineral water but afterwards, Okuyasu feels re0energized, as if he had jsut had a full 10 hours sleep. His shoulder begins to ache and Okuyasu ends up rubbing enough dirt and dead skin off of his shoulder to make a softball out of them after eating a cheese and tomato dish but afterwards his arms feel much better and he can stretch in a far more agile fashion. After eating a spicypasta dish named "Spaghetti Alla Puttanesca",  two of Okuyasu's teeth cavities are violently ejected and new teeth grow in their place. Josuke becomes incredibly suspicious and discovers miniature organisms in the food, determining them to be Tonio's Stand, Pearl Jam.

Josuke investigates the kitchen and finds the main dish, lamb and applesauce, on a nearby counter top, as well as Tonio himself feeding the same dish to a small dog. Said dog's intestines are violently expelled from its body and the same fate befalls Okuyasu when he runs into the kitchen and eats the dish hungrily, his intestines bursting from his stomach. Tonio notices Josuke and becomes incredibly violent and angry, throwing a knife at Josuke and thrusting a bar of soap into Josuke's face, demanding he follow proper kitchen hygiene and berating him for entering the kitchen without permission.

Amazingly, Okuyasu's stomach feels far better, his constipation cured, and the dog who also ate the same dish is also fully healed, much to Tonio's joy. Tonio clears up the misunderstanding by stating that his only goal was to make good food that could make everyone feel better. He discovered his stand whilst training in his culinary style, but since his hometown of Naples did not accept his style and he was too young to legally be allowed to start his own restaurant by Italian law, he moved to Japan, to the town of Morioh where, while competition was harsh, the opportunities were rife.

Though the misunderstanding is cleared up and Tonio is revealed to ultimately be a good person with an unorthodox Stand, Tonio still forces Josuke to clean the kitchen from top to bottom whilst he prepares Okuyasu's pudding dessert to cure his athelete's foot.

He later appears among the stand users warned by Josuke about Yoshikage Kira after Shigekiyo Yangu's death. He promises to keep an eye on his costumers. His final appearence is at the end of Part 4 where he, along with the other heroes, bid farewell to the spirit of Reimi Sugimoto.

The Book: 4th Another Day
(The information below derives from a Light Novel not written by Araki. As such, it may or may not be consideredcanon.)

Tonio has became sick and the reputation of his food and restaurant seems to have gone away. Tonio used his food to heal Chiho Futaba's cold and Takuma Hasumi's stiff neck.

Trivia

 * He addresses Okuyasu Nijimura and Josuke Higashikata with "Signore" when they visit his restaurant and otherwise speaks with an accent.
 * It seems Tonio had picked up an ill puppy, which he nursed back to health and kept it in a cage.
 * Tonio makes an appearance in the Part 4 novel.
 * Tonio is probably the first character in the series whose name is based on a fashion designer.
 * Tonio is the only ally in Part IV who doesn't have a major role in another story arc after his debut.
 * Tonio seems to have a younger brother named Massimo Volpe, who appears in Purple Haze: Feedback.