Following , in 1875 , was the Knopp Trilogy , about the life of Tobias Knopp : Adventures of a Bachelor ( Abenteuer eines Junggesellen ) , Mr. and Mrs. Knopp ( Herr und Frau Knopp ) ( 1876 ) , and " Julie " ( Julchen ) ( 1877 ) . The antagonists of the trilogy are not pairs of nuisances as with Max and Moritz or Jack Crook , Bird of Evil ( Hans Huckebein , der Unglücksrabe ) . Without pathos , Busch make Knopp become aware of his mortality :