Are the characters in The Picture of Dorian Gray stereotypical?

The characters in The Picture of Dorian
Gray are not necessarily round and complex. For a character to be round and
complex it needs to change throughout the plot as a result of the different dynamics
that take place in the story. Dorian Gray, Lord Henry, and Basil remain the same from
beginning to end. Therefore, one can conclude that, with the exception of a few minor
changes in their characteristics, all three characters are quite stereotypical and
somewhat flat.

Here is why:

If
you start your analysis with Lord Henry Wooton, you can immediately notice how his
character is no different than Wilde's other dandies from other works such as Lord
Goring or Lord Darlington. The role of Lord Henry is to corrupt Dorian Gray and to show
him a life of sin without remorse. It is clear that Lord Henry remained the same
throughout the novel and did not change as a consequence of
anything.

Dorian Gray never changed either. Aside from the
fear of seeing his picture, he never attempted to change his immoral ways. When he
ripped the picture (and killed himself as a result), he did not do it out of remorse for
the things that he did. He did it because he was too scared of the picture and was sick
of it, but not of his sins.

Basil never changed either. He
is stereotypical of the artistic classes in Victorian London, as he said to Lord Henry
himself. He is the typical "entertainment" of the upper classes, who opted to befriend
artists and become their patrons to make up for their own lack of intelligence and
charisma. His devotion to Dorian never changed either. If anything, it intensified
through time to the point of trying to protect Dorian from the awful things said about
him in London. His love for Dorian led to his death (by Dorian's own
hand).

Therefore, you can say that the characters in
The Picture of Dorian Gray are flat and stereotypical, but also
interesting, full of charm, and truly classic.