Who is Crixus from Flashman & the Angel of the Lord: From the Flashman Papers, 1858-59 and what is their importance? "Flashman_&_the_Angel_of_the_Lord:_From_the_Flashman_Papers

A fictional character, Crixus is a return character from "Flash for Freedom!" and a leader of the Underground Railroad. Crixus' pseudonym comes from Spartacus' fellow slave rebel leader in Roman times. As he had in New Orleans in the earlier novel, Crixus in Baltimore has his men seize narrator Sir Harry Flashman (whom he assumes to be Lt. Comber) in a dark alley to propose a mission. Crixus is now a physically frail old man. His chief henchmen are Moody and Joe Simmons.