In The Picture of Dorian Gray, there are three main characters.

Dorian Gray, who is a calm, very attractive young man and adored for his good looks, Basil Hallward who is a painter that idolizes Dorian and Lord Henry Wotton, an older man, who becomes a good friend of Dorian's.

The power of greed and selfishness take over Dorian Gray and create an ugly evil side to him.

Dorian awakens late the next day feeling guilty for his treatment of Sibyl, and writes an impassioned love letter begging her forgiveness. Soon, however, Lord Henry arrives, and informs Dorian that Sibyl committed suicide last night. Dorian is shocked and wracked with guilt, but Henry convinces him to view the event artistically, saying that the superb melodrama of her death is a thing to be admired. Succumbing to the older man's suggestion, Dorian decides that he need not feel guilty, especially since his enchanted portrait will now bear his guilt for him. The picture will serve as his conscience, allowing him to live freely. When Basil visits Dorian to console him, he is appalled at his friend's apathy towards Sibyl's death. Dorian is unapologetic and annoyed by Basil's adulation of him.

His portrait would change and Dorian stayed who he was.

The Picture of Dorian Gray was first published in 1890 in Lippincott’s Monthly Magazine.

Dorian Gray is the impossibly beautiful young man who becomes the subject of a portrait by the fashionable society painter, Basil Hallward. When the artist, who has become infatuated with his model, introduces the "young Adonis" to Lord Henry Wotton, he is rapidly seduced by the peer's witty and corrupting devotion to fin-de-siècle hedonism, some of it inspired by Wilde's own experience.

The Picture of Dorian Gray; Chapter 2; Table of ..

As Wilde's notoriety grew, mainly as a result of this novel's infamy, his enemies continued to use the homosexual undertones and seemingly immoral hedonistic values of Dorian Gray as an argument against his character. Such criticisms continued throughout his ruinous court appearances in 1895. At the time, any sort of homosexual act was a serious criminal offense in England. The first published version of the book from Lippincott's Monthly contained much more obvious allusions to physical love between Dorian and Lord Henry, and Dorian and Basil. Wilde had made a point of reducing these references in the revision, but the original version of the novel provided much fuel for his opponents' arguments.

The Picture of Dorian Gray (2017) - IMDb

Under the malign influence of Lord Henry – "the only way to get rid of temptation is to yield to it", is one of many Wildean epigrams scattered through the text – Dorian Gray plunges into a decadent and sinister milieu, becoming a slave to drugs and debauchery. His fatal love affair with the actress Sybil Vane alerts him to the secret of his eternal youth: he will remain untarnished while his portrait reflects the hideous corruption of his soul.

The Picture of Dorian Gray - Wikipedia

In the light of several subsequent reviews, this was a comparatively mild critique. Wilde himself was steadfast in defending his author's vision. He always maintained that the Faustian idea of Dorian Gray, "the idea of a young man selling his soul in exchange for eternal youth", was "old in the history of literature". But when he gave an archetypal story a striking contemporary spin, with strong homoerotic undertones, he stirred up a furore of hostility.

'The Picture of Dorian Gray' Review - ThoughtCo

Eventually despairing, the young man blames the artist Hallward for his fate, and murders him. But Dorian Gray can never "be at peace". Finally, in a horrifying climax, he takes a knife to his own portrait. When his servants find him, the picture depicts their youthful master as they had once known him. The corpse next to it is as "withered, wrinkled and loathsome of visage" as the portrait had been. Art and life are back in harmony, as Wilde intended, and his brilliantly allusive moral tale is complete.