Simplify the following text for a Grade 5 native English-speaking person.
Original: Mulder 's greatest nemesis was The Smoking Man , who , despite his obvious ill-intent , seemed to hold Mulder in special regard . Though he mocked Mulder to his face for his foolishness and the futility of his quest , in `` Two Fathers '' he told his son Jeffrey Spender , `` You pale to Fox Mulder . ''
Simplified: Mulder has a sister named Samantha Mulder .