 Wilfred often comes across as stupid, but sometimes displays signs that he is brighter than he appears – for instance in the episode "The Van", he finds Arnold's missing wife Jessica.Also present are Vera Plumtree (Barbara New), who has no particular role, but seems to do various jobs around the station and acts as Mr Parkin's housekeeper.Her late husband used to work on the railway, as she frequently reminds the other members of staff; her catchphrase is "he was an engine driver you know".