Prufrock was a person who avoided opportunities for change.
The speaker is using allusion it this line.
Allusion is a figure of speech in which something outside of the source text is being referred to. So here, Bacchus, Satan, and the Hangman aren't actually characters in this literary piece of work, but the author is making a reference to them nevertheless.
The thief (make sure to check your spelling) jumped over the fence.
I saw an interesting cartoon film on television.
The boy took the book off the shelf.
You are responsible for the mistake.
Sunita doesn’t agree with her mother.
