The imagery used in Saki's short story, "Dusk," to describe the characters is very direct. Engaged readers are offered such detailed descriptions that they (the readers) can easily create mental pictures of the people depicted.
Given that Norman Gortsby describes the people who come out at dusk as those appropriate to the "hour of the defeated."
Men and women, who had fought and lost... came forth in this hour of gloaming, when their shabby clothes and bowed shoulders and unhappy eyes might pass unnoticed, or, at any rate, unrecognised.
Here, the detailed description of those who emerge at dusk is immaculate. One can picture the people milling about, keeping their eyes down, shoulders bent in shame, hiding from the other defeated people.
When describing the old man, Saki's few simple words create a vivid picture for the reader.
An elderly gentleman with a drooping air of defiance...an individual who had ceased to defy successfully anybody or anything.
This character can be immediately recognized. He is old, skin probably wrinkled with graying hair and eyes. Like the other people at dusk, the old man looks defeated through his defeated posture, his "drooping air."