Gatto is introduced when he accompanies Fango and Serpente to the Island. Fango approaches Tigre's car and greets him. Fango says that someone swiped a little of their booze. And he's out looking for it. Tigre says that he doesn't know anything and asks who he is and if he's with the Orco family. Tigre opens his door and spits tobacco on Fango's boot. He says he is and introduces himself as Fango. Gatto stands quietly behind. Fango again asks where he got it and Tigre says that he brought it in from "that way" as he points behind him. Fango looks unimpressed before laughing and saying that he's honest. He then steps to the side as Gatto begins punching Tigre with brass knuckles. Fango lights up a cigarette and begins smoking it as he takes off his boot. Still smiling, he rubs the boot on Tigre's face and asks him again.
When Nero, Vanno, Avilio, and Corteo return, Nero notices that Tigre is slumped over in his seat with a handkerchief tied in front of his mouth. He yells his name and runs over and opens the door. He tells Tigre to wake up, but Gatto is secretly hidden in the backseat. He tries to stab Nero from the back, but Nero dodges this and grabs Gatto's arm. Vanno winds up and punches Gatto in the face.
Fango asks if Serpente is dead or not, and suggest that they just asks them. Gatto asks if he means at the Vanetti Mansion. Fango asks if he has a better idea. Gatto says that Don Orco doesn't want Fango starting trouble. Fango says that Orco won't be around much longer. Suddenly, Fango spots Tigre, Barbero, and Nero driving by in front of them. Fango smiles and slams on the gas and pulls the wheel sharply, following them. Fango says that it's their lucky day as he yells "yahoo."
Corteo sits outside in the passenger seat of the car. Barbero sits in another car. They both notice a red car drive by and Barbero gets out of the car. Tigre sits on the steps and notices a group of kids playing with a ball. He smiles and spits to the side, but actually spits on a boot. Fango remarks what a coincidence it is. He says that they have some more fun. Gatto punches him in the back of the head with medal cuffs on his hands and Tigre falls on the ground. Avilio sees this from the window. Fango gets on top of him and asks if he's with Nero. Tigre doesn't answer and instead spits just below Fango's eye. Fango smiles and says that he must want a reward as he wipes his face. Fango takes a drag and then takes it out of his mouth, slowly inching it towards Tigre's face. He tells him not to be modest and take it. Tigre curses him, and Fango says that it must get him hot as well. With the cigarette inches from his face, Tigre says that he's not like him. Suddenly they're interrupted by glass breaking. The three stop and look up.
In the room, the door knob slowly turns and then is kicked open. Fango pushes Tigre in front of him with a gun to his head. Gatto pulls out his gun as well as they both look around the corner. In the room, Nero holds a gun to a man who appears to be Serpente (but whose head is covered in a sack). Fango says that it's just sad that he got captured as he laughs. "Serpente" mumbles something but seems to be gagged. Fango asks if the man with the gun is Nero, and he confirms he is. Fango says that he'd been hoping to meet him. Fango suggests that they make a trade. Fango tells Gatto to go first. He drops his gun to the ground and slides over. Fango says that they're next. They'll put them down at the same time. They both crouch down and slide their guns on the ground. Fango then says that they'll both start them walking at the same time. Tigre and "Serpente" begin walking forward. Fango says that Avilio sure suprised him the day before. Nero says that he's a good guy. Fango notices something and says to wait. Fango says that Serpente seems to have lost a little weight and that his clothes have blood on them. He glares for a second, then smiles and says to keep walking as he seems to be scratching his crotch. Fango actually pulls a gun out and points it at "Serpente"'s head. Before he shoots, the man suddenly kicks the gun upwards and pulls out a knife, swiping it him. Fango laughs and jumps back. Fango manages to kick him against the wall and the man falls to the ground. He pulls the sack off his head, revealing it to be Angelo. Fango says that he thought he smelled something fishy about him. Cerotto comes out and throws a gun over to Nero. Nero tells them to run as he aims it. Before Gatto can shoot Angelo, he is shot in the shoulder and drops his gun. Tigre and Cerotto run out the window. Nero shoots at Fango, but he escapes out the door. Gatto hides behind a bookshelf and shoots at Angelo, but misses. Angelo manages to open the window and jump out onto the stairs. Nero and Gatto shoot at each other but they are both behind cover. Suddenly, Fango runs in and picks up a gun. He runs behind where Nero was hiding, only to find the window open and Nero gone.
Fango finds Serpente's body dressed only in his underclothes. Gatto is distressed and curses as Fango turns to look at himself in the mirror. Fango smiles and calls Gatto an idiot, asking why he has a long face. He runs his tongue along the sharp side of his blade and says that they can declare war on the Vanettis now.
Fango looks at a picture of Delphy. He remarks that he must have a big penis. Gatto, who is driving, looks at him, surprised. Fango says that since he has a big nose, he must have a big dick. Gatto says that he looks like the straight-laced, stubborn type. Fango says that guys like him are easy to deal with. He says that he thinks it's time to crush the Vanettis.
As Corteo walks home alone, he spots Gatto across the street sitting in his car and glaring at him. He continues walking, nervously and stumbles slightly before continuing on.
At the Vanetti Mansion, Avilio is led to the garage. There, Nero, Barbero, Ganzo, Corteo are all located. Corteo is being roughed up for answers about his betrayal of the family by Carmelo. Avilio asks how they know it was him, and he motions over to Gatto. He explains that Corteo leaked Nero's schedule to Fango then came back to the island yesterday. Barbero explains that Gatto came to throw himself at their mercy with the info about Corteo. Gatto says that the higher-ups want to work with the Vanettis. Since Fango's gone, they're done for.