Guide Mentor
Character Role Analysis
Nobody
Spade is a lone wolf. He eats his meals alone. He chases down bad guys alone. He smokes his cigarettes alone. If he had a Facebook page, he'd probably only have three friends: Effie, Miles Archer, and maybe Tom (Spade couldn't "friend" Iva or else people might catch on that they're having an affair).
What does all this add up to? Mostly that Spade has few people to turn to and even fewer people he's willing to take advice from. So there really isn't any guide or mentor figure for Spade, and that's kind of the whole point. Spade lives in such a corrupt, chaotic world that he has to fend for himself and make the rules up as he goes along.