Marcello is fickle and irresponsible, leaving Antonio in serious debt after gambling his money. At the start of the game, Antonio says that "Marcello has disappeared again", indicating that he has done so before. It is hinted that Marcello has a gambling addiction, which Freddy Fries took advantage of by convincing him to gamble the bistro's earnings.
However, Marcello seems genuinely sorry for what he's done, and helps Emily and Norma out by cleaning tables. When Emily says Marcello doesn't deserve to rest after what he's done, Antonio defends him, saying he's a slacker, but deep down he's a good boy. At the end of the game, Emily says he seems to finally be developing a sense of responsibility.
Marcello is a slender young man with light skin, brown hair and brown eyes. He has long sideburns and a small goatee. He is seen wearing brown pants and an orange shirt with green sleeves.
See also: Storyline
Little is known about Marcello's childhood. It is unknown who his mother is or what happened to her. It can be deduced that Marcello was a mischievous child, as he once took Antonio's secret recipe as a joke. Strangely, Marcello does not appear in Emily's Childhood Memories, even though he and Emily appear to be around the same age, and Antonio visited Emily often.
He appears and/or is mentioned twice in Delicious Series.
Marcello has left without saying a word after leaving Antonio in debt. While Emily and Norma are working in the cafeteria, Marcello returns out of the blue. He is eager to make amends and helps out by clearing tables.
While Marcello did not physically appears in the game, he is mentioned by Antonio when Emily confronts him about what caused the fight between him and Alfonse. It is revealed that Marcello stole Alfonse's secret recipe as a prank when he was younger and Antonio dismissed it only as a harmless prank, something that Alfonse took offense. Later in the game, Antonio apologizes to Alfonse about the incident and the two made amends by letting Antonio being the entertainer of Alfonse's restaurant.
It is unknown what became of Marcello after Delicious 2, as he is never seen or heard from again. It is possible that he disappeared again. He isn't invited to Emily's wedding in Emily's Wonder Wedding, which could possibly indicate that he doesn't keep in touch with his family.