John Irving's character, Garp (4 letters) and TSGARP (6 letters), are both characters from his novel, 'The World According to Garp'. Garp is the protagonist of the novel, a writer and a father who struggles with the complexities of life. TSGARP stands for 'The Son of Garp', which is Garp's son, also a writer. Both characters are important figures in the novel and represent the themes of family, identity, and the search for meaning in life.