John R. "Johnny" Valentine is possibly the main antagonist of the fictional movie "Angels with Filthy Souls" that Kevin watches in Home Alone and it's sequel "Angels with Even Filthier Souls" that Kevin watches in Home Alone 2: Lost in New York. He is played by character actor Ralph Foody in both movies.
Angels With Filthy Souls (Home Alone)
In Home Alone Kevin watched a film called "Angels With Filthy Souls" (after being left home alone and while eating a large amount of junk food), which focuses on a gangster named Johnny.
One day, Johnny gets a knock at his door and asks who it is. A man named Snakes comes in and announces that he got "the stuff". Johnny tells Snakes to leave it on the door step and then head out.
Snakes then asks Johnny about some money (10 percent), as Snakes was told by another gangster named Acey. Johnny, smirking, says that Acey isn't in charge no more, and that he's upstairs taking a bath and will call Snakes when he gets out. Johnny then picks up a Tommy Gun and tells Snakes that he's gonna give him to the count of 10 to get his "ugly, yellow, no-good kiester" off his property before he pumps his guts full of lead. However, Johnny cuts the count short, counting to 2 and then jumping straight to 10 ("1, 2....10!"), forgets 3-9 and shoots Snakes while laughing maniacally. After he kills him. Johnny stares at Snakes' dead body on the ground and says "Keep the change, you filthy animal!" Kevin paused the video and shouted for his mom.
When the Pizza Boy comes to deliver Kevin his cheese pizza, Kevin uses Johnny's scene in the movie, pausing over Snakes' part to get Johnny to talk to the Pizza Boy and makes him believe that Johnny lives in the house, and scares him away when Johnny shoots at Snakes.
Kevin also does this to scare Marv away by making him believe that Johnny and Snakes have already broken into his house and that Johnny is going to kill Snakes to keep the stuff in this house for himself. Marv then runs back to the Wet Bandits' van.
Angels With Even Filthier Souls (Home Alone 2: Lost in New York)
In Home Alone 2: Lost in New York, Kevin watched Angels With Even Filther Souls in his hotel room and eating ice cream. In this movie, Johnny is sitting in his apartment smoking a cigarette and watching a movie when a woman enters the apartment. Johnny tells her to hold it right there, and it turns out to be his cowardly girlfriend Carlotta. He tells her that he knew it was her because he could smell her getting off the elevator. When Johnny asks Carlotta if she was at his apartment the previous night, Carlotta replies that she was singing at The Blue Monkey last night.
Johnny doesn't believe her and tells Carlotta that she's been smooching with his brother, and other guys as well, such as Snuffy, Al, Leo, Little Moe with the gimpy leg, Cheeks, Boney Bob, and Cliff. Carlotta again denies it; Johnny tells her that he believes her, but then takes out his Tommy Gun, saying that his gun doesn't believe her. Carlotta pleads for her life, telling Johnny that he's the only duck in her pond and that if her love was an ocean, "Lindy" (famed pilot Charles Lindbergh) would have to take two airplanes to get across it, to no avail. Johnny tells Carlotta to get out of his apartment before he counts to 3, but he fires his gun on her and kills her before he said 3. Johnny then says, "Merry Christmas, you filthy animal!" and fires a couple more shots. He then says, "And a happy New Year" before firing one more shot.
When Mr. Hector, Cedric, Ms. Stone, Officer Cliff, and the Security Guard come into the room to confront Kevin about his Dad's stolen credit card, Kevin hides in the room and uses Johnny to talk to them by pausing Carlotta's parts out and making them believe that Johnny is now staying in the room, accusing Mr. Hector of smooching with Snuffy, Al, Leo, Little Moe, Cheeks, Boney Bob, and Cliff in the hotel room. As soon as Johnny says "Cliff", Officer Cliff gasps in shock, and Mr. Hector, Ms. Stone, Cedric and the Security Guard look over at him in surprise. Officer Cliff denies it. Mr. Hector then tells Johnny that he's mistaken and that they're looking for a young man. Johnny tells them that he believes them, but brings out his Tommy Gun, telling them his gun doesn't, and orders them to get down on their knees and to tell him that they love him, which they do. Johnny tells them to leave before he counts to 3. As they do, Johnny fires his gun, making Mr. Hector and the others believe that there's an insane guest in the room with a gun. Kevin takes that as the opportunity to escape through the emergency exit, only to get caught by the Sticky Bandits.