Q 3 / Edgar changed his shape and named himself as The poor Tom. Discuss ?

Hunted by Gloucester's men due to Edmund's trickery, Edgar disguises himself as poor Tom of Bedlam, a demonic madman, who believes the foul fiend is torturing him. He provides a character for Lear to sympathize with during his encroaching madness and leads his blinded father to Dover where he saves him from suicide. Using many different disguises, he kills Oswald, alerts Albany to Goneril's adultery, and slays Edmund. Once his identity is revealed, he informs the audience of the events they missed and becomes King at the end.