Draco Malfoy
Apart from the individual referred to as "He Who Shall Not Be Named," Draco stands out as Harry's primary rival. Described as a young man with platinum blonde hair and possessing aristocratic facial features, Draco embodies the darker aspects of Slytherin House. His demeanor exudes a sense of superiority, a quality underscored by a perpetual sneer that graces his countenance.
While Tom Felton's portrayal impeccably encapsulated Draco's character, he needed to don a blonde wig throughout the entire series due to his natural brown hair. Nonetheless, Tom bears a striking resemblance when considering the character's physical attributes.