Polonius is the ‘wretched, rash, intruding fool’ in Hamlet who comes to an untimely end when Hamlet accidentally stabs him. Hamlet’s farewell words are often taken as a definitive epitaph for Polonius, the father of Ophelia and Laertes, who does indeed earn every one of those descriptors.
Traditionally, Polonius has been played as a pompous windbag who, while not actually deserving such an end, isn’t much mourned. He’s never been a ‘fashionable’ character. Unlike other personae who have a greater imaginative impact, Ophelia and Rosencranz and Guildenstern, for example, Polonius hasn’t been seized on and reinterpreted for different audiences.