Complex sentence: Nick Nack was an all-round personal assistant to Francisco Scaramanga, acting as butler, housekeeper, and chef, as well as a henchman to Scaramanga's criminal activities.
Split into simpler sentences: Nick Nack was an all-around personal assistant to Francisco Scaramanga. He was Scaramanga's butler, housekeeper, and chef, as well as a henchman to Scaramanga's criminal activities.