he is upset beacause, hester had a chil with someone else
Roger Chillingworth is a physician.
Roger Chillingworth personifies an obsession with vengeance.
Roger Chillingworth is physician & Hester Prynne's husband.
Doctor Roger Prynne was his REAL NAME and Doctor Chillingworth was the false name he used.
Roger Chillingworth asks Hester to keep the secret that he is her husband and that he is seeking revenge on the man who had an affair with her.
Roger Chillingworth approaches Dimmesdale just as he invites Pearl and Hester to join him near the scaffold.
When Hester meets Roger Chillingworth on the peninsula, she tells him that she is going to make Reverend Dimmesdale aware of Chillingworth's true identity (Roger Prynne - Hester's former husband.)Hester says to Roger Chillingworth "I must reveal the secret. He [Arthur Dimmesdale] must discern thy true character, to discuss this matter with him, told him to be there for that discussion.
Chillingworth's real name is Roger Prynne. In Nathaniel Hawthorne's novel "The Scarlet Letter," he adopts the pseudonym Roger Chillingworth in order to conceal his true identity and exact revenge on Hester Prynne and Arthur Dimmesdale.
One opposing view is that Roger Chillingworth a powerful enchanter during his Indian captivity and often performed miraculous cures by their skill in the black art. The second opposing view of Roger Chillingworth was that he was seen by an handicraftsman at the time OS Sir Thomas Overbury's murder under another name with a famous conjurer named Doctor Forman.
Roger Chillingworth, Hester Prynne's husband, was still at home attending to business. He sent Hester ahead to Massachusetts Bay Colony while he continued to take care of the business.
Arthur decided to escape from Roger Chillingworth by leaving Boston and going to live in Europe. This decision was driven by his guilt over his affair with Hester Prynne and his desire to start afresh away from Chillingworth's torment.
Roger Chillingworth wants revenge on Reverend Dimmesdale for having an affair with Hester Prynne. He seeks to torment Dimmesdale as he believes Dimmesdale is partly responsible for the shame and suffering that Hester endured. Chillingworth aims to expose Dimmesdale's guilt and hypocrisy.