Who is Candy from The Long Goodbye and what is their importance?

Candy is the Wade's houseboy. He tells Marlowe his full name is Juan Garcia de Soto yo Soto-mayor. Candy doesn't like Marlowe from the beginning, and Marlowe later discovers that his dislike is based upon his desire to protect Roger. When Candy suggests that Marlowe could knock on Eileen's door and be allowed entrance, Marlowe pulls Candy's arm behind his back and tells him not to speak ill of his employers. Candy, who has just shown Marlowe his proficiency with a switchblade, says the hold is a "neat trick" and that he'll remember it.

Candy is also in the room when Eileen tells Marlowe and Spencer that Roger killed Sylvia. Candy then hears Marlowe say that he believes Eileen killed both Sylvia and Roger. Candy then approaches Marlowe and has his knife in his hand. Marlowe tells Candy not to harm Eileen because it will change nothing and Candy will go to jail. Candy hands over the knife but Marlowe gives it back as he leaves, telling Candy that he trusts him. Candy calls Marlowe when Eileen commits suicide, and Marlowe tells him that he should tell the police the entire truth.