Vincent 'Vinnie' Green is the younger brother of Norman and Megsie Green. His two older siblings regularly bully him, especially Norman. When cousins Cyril and Celia first arrive at the farm, they start fighting with Norman and Megsie whilst Vincent simply attacks the sofa with a cricket bat until Nanny McPhee brings them under control.
When Nanny McPhee leaves at the end of the film, she gives Isabel and each of the children one of her medals with Vincent receiving the medal for Enthusiasm. Seeing Nanny McPhee leave, they all take off after her, only to be greeted by a returning Rory.