A veteran gangster and a long-time friend of Joe Cabot, he is one of the six men assembled by the latter for the jewel heist. He is good-natured and persuasive, and believes in a code of honor among criminals.
Decoy Protagonist: He's clearly the main character for the first part of the film, but drops out of the picture for a while after Mr. Blonde and then Mr. Orange take center stage. By the climax, he's back to being in the spotlight alongside Orange.
Despair Event Horizon: Clearly crosses it after Orange reveals himself as the rat, degenerating into heavy sobbing and ultimately killing both himself and Orange. Considering the fact that he just killed his closest friends and will very soon die himself all for a person he thought he could trust more than anything, it's pretty justified.
Dragon-in-Chief: Joe's second in command and field team leader. Joe only gets involved in the action right at the end.
Rated M for Manly: "Shit, you shoot me in a dream and you better wake up and apologize" and other general badassery. Makes his extremely unmanly, undignified sobbing at the end of the movie all the more jarring.
Too Dumb to Live: He distrusts people he had known for years while betting his life for a guy he only knew for a few days.
Villain Protagonist: Initially comes off as a very strong Anti-Villain and an incredibly sympathetic character, but we're later treated to flashbacks that definitely show that, while he has morals, he's still a villain.
Mean Character, Nice Actor: Michael Madsen found it hard to continue with the torture scene after Kirk Baltz's infamous "I have a family!" ad-lib.
Moral Sociopathy: He'll torture and murder innocent people, but, he refuses to give info to the authorities on his boss.
The Only One I Trust: Both Mr Pink and Joe Cabot single him out as being most definitely not an undercover cop, albeit for different reasons (Pink because Blonde's too much of a psycho to be an undercover cop, Joe because Blonde has previously demonstrated his Undying Loyalty).
The Sociopath: He's the least sympathetic member of the gang for this reason.
Softspoken Sadist: He never raises his voice even where he's describing to the cop about how much he'll enjoy torturing him, or justifying killing a crowd of people in a store because the alarm went off.
Politically Incorrect Villain: Averted. If you listen, he is the only character who doesn't spew racist, misogynist, or homophobic dialogue, which leads to a Fridge Brilliance moment when you realize he is a cop with a African-American chief, whom he seems to respect, and is probably a nice guy in real life.
Undying Loyalty: He's so overcome with guilt over Mr. White sacrificing literally everything for him that he reveals to him his identity as a cop literally moments before the cops arrive, essentially forfeiting his own life.
Instant Death Bullet: Averted; he gets shot in the forehead and tries to pull the getaway car out, but crashes it into a police car and ends up dying of his wound before he can help Mr. White and Mr. Orange escape.