Antipholus of Ephesus is a character from William Shakespeare's play, "The Comedy of Errors." He is one of a pair of identical twins, separated at birth, who later find themselves in the same city without realizing each other's presence. Antipholus of Ephesus is the master of a household in Ephesus, where he experiences a series of comedic misunderstandings and mistaken identities. Throughout the play, Antipholus of Ephesus interacts with various characters, including his servant Dromio of Ephesus, who is also a twin. The confusion escalates as he encounters his brother, Antipholus of Syracuse, leading to humorous situations and ultimately a resolution of their identities.