Rockin' Ricky Rialto is an unseen character living in Kingston Falls. There is a billboard of him near the town square, showing him parodying the character design of Indiana Jones, played by Harrison Ford.
Rockin' Ricky Rialto referred to himself as just Rockin' Ricky and is a radio program broadcaster who talks with other people. At one point, Pete Fountaine called him, stating that "these little green guys" were attacking his house, and Rockin' Ricky complained it's Christmas and not Halloween, and called the nonsense about the green monsters "Orson Welles crap". Then the breaking of the building where Rockin' Ricky was talking was heard on the radio and then Ricky got attacked by Gremlins, and he screamed in horror called for help, which scared Gizmo when he heard this on the radio in Billy Peltzer's car.
He is heard again alive when still talking on the radio at Randall Peltzer's car radio, meaning that the Gremlins at his building also left to the movie theater to watch Snow White and the Seven Dwarfs. He said that the Marines were standing by in Kingston Falls with fire hoses, which meant that the Gremlins would end up multiplying again.