Ron Weasley - Black Slytherin Robe and Short Legs (Vincent Crabbe Transformation)

Ron’s Slytherin-robed figure comes from the Polyjuice Potion sequence in Chamber of Secrets, when he and Harry disguise themselves as Draco Malfoy’s classmates to investigate the Heir of Slytherin. In the story Ron becomes Vincent Crabbe; in LEGO form, the joke becomes mechanical. The school uniform establishes the disguise while alternate facial identities let the same small object represent both Ron and the student he is impersonating. It is a perfect example of modern LEGO Harry Potter design turning a plot device into play function: the minifigure itself performs the transformation.