What details in the physical description of Zaroff foreshadow the truth about his nature?

When Rainsford initially arrives at General Zaroff's impressive chateau, Zaroff descends the steps and immediately recognizes his guest as a renowned hunter. Rainsford's first impression of General Zaroff is that he is "singularly handsome." However, Rainsford also notices that there is some bizarre quality about the general's face. General Zaroff is then described as being a tall man with vivid white hair and a black pointy mustache. He is also described as having the face of an aristocrat, with very black and bright eyes. Rainsford also describes Zaroff's face as being dark and resembling a man used to giving orders. Judging from Rainsford's description, the bizarre, dark, and resolute appearance of General Zaroff's face foreshadows his twisted, maniacal nature. The words "bizarre," "dark," and "black as the night" are ominous and reflect General Zaroff's deranged personality. When Rainsford finally dines with the general, he discovers that Zaroff hunts humans on the island in order to satisfy his desire to hunt competitive prey.