A legendary detective...until he led his team into an ambush. He spent seventeen months in a coma, and then a few more after that on leave from the force. He is called back in the pilot when there is an attack suspiciously similar to the one that took out his team.
Artificial Limbs: His leg was blown off in the ambush. The synthetic replacement glitches on him pretty often.
On the other hand, his artificial leg can also kick an evil android through a room.
Badass: Part of what made him such a legendary cop. Showcased in the show's opening, where he goes into a heavy fire situation, gets his leg blown off, has a grenade explode in front of him and manages to survive.
Good Is Not Nice: Despite his good intentions and strong sense of justice, one gets the sense that he doesn't really know how to be nice. He's gruff at best and can be carelessly hurtful even to the people he likes.
Irony: He complains about the DRNs having psychological issues and then his superior officer reads his own psych evaluation. The conclusion of it? He should never return to duty. It is also those same psychological issues that make him come to actually like and get along with Dorian, rather than dismissing him as the sort of cold, logic-driven synthetic that he hates.
Harmful to Minors: Stabs his artificial leg and traumatizes a little girl. Later, during a elementary school tour of the department, he shows the children what happens to criminals - that is, he shows a uncensored picture of a guy with his arm blown off.
Has a Type: Primarily attracted to brown eyed brunettes. Preferably smart ones.
A decommissioned android model, designed to be more emotional than the MX's. He was doing satellite maintenance before he was shut down, but has always wanted to be a cop. When Detective Kennex proves to be too distrusting of the coldly logical MX units to be paired with one, Dorian is brought out of storage and put into service with Kennex.
Awesomeness by Analysis: Dorian can tell that the suspect shot himself in the leg just by looking at the medical records for a few seconds.
Badass: Being an android and all, Dorian's capable of doing some awesome stuffs.
Kennex: He flipped a car once. (shrugs) Didn't know he could do that.
My Sensors Indicate You Want to Tap That: Not only does he note John's attraction to the Sex Bots in episode 2, he also notes Detective Stahl's apparent attraction to John, and the fact that John hasn't tapped anything in a long time. Dorian seems to share John's squicked out reaction to how he discovered the last one.
New Powers as the Plot Demands: Lampshaded in the episode where he chases a van on foot, catches it and flips it over. Kennex asks "Since when can he do that?"
Nice Guy: Values civil rights, is incredibly patient with people that treat him like a mere machine.
No Sell: When the syndicate operative tries to gas him after mistaking him for a human officer. Also the weapon that disarms all the newer android models has no effect on him.
Ridiculously Human Robot: He's friendly, has dreams of his own, loses control of his anger, and even breathes. He looks so human that one of the terrorist leaders tries to use the biological weapon designed to kill cops against him. That said, experts in the field can still tell he's not human. There's a seam by his ears which was probably left there so he wouldn't be able to blend in completely.
Shipper on Deck: Starts shipping Kennex and Stahl once he learns the latter matches the former's type.
It is mentioned in "Blood Brothers" that his designers were "thoughtful" in making him look human.
Terrified of Germs: When John had to preform some on the spot repair for Dorian, he simply grabbed what was available: Nail clippers, a dirty cotton swab, and some chewing gum. Before even being touched by these makeshift tools, Dorian questioned John repeatedly if they were 'clean'. Justified in that he does have a lot of sensitive electronics and unlike humans, no immune system to get rid of foreign material. Plus, there's that whole 'getting deactivated for four years' thing.
Verbal Tic: Inserting the word "man" in sentences, which he ascribes to a colloquialism program in his system. Another, identical-looking DRN shares the same tic.
The chief of police. She was the one who insisted John return to work, as well as assigned Dorian to him.
Christmas Cake: A observant psychopath reveals one of her greatest fears is becoming one of these. The episode later subverts it by showing she's still a Fair Cop in the eyes of men not under her authority.
Hidden Depths: Is implied that he feels under-appreciated at work and wants someone to talk to.
Mysterious Past: He was a hacker once, and possibly even a cyber-terrorist.
Nice Hat: The fedora he picks up for his undercover work.
Omnidisciplinary Scientist: So far, whenever something scientific needs doing, Rudy can do it. His expertise ranges from computer engineering, through robotics to chemistry and biology, and possibly more.
Sharp-Dressed Man: Would like to be one (and is one while undercover), but rarely takes the trouble to stay immaculate.
Waistcoat of Style: Subverted and played straight. He wears a waistcoat often, but it is so wrinkled and rumpled that he gives off more of an absent-minded professor vibe, and played straight when he was undercover.
Det. Richard Paul
Portrayed By: Michael Irby
A loud and abrasive cop who doesn't think John should have returned to service.
Driven by Envy: Valerie suggests that he is jealous of John's excellent record prior to the ambush.
Jerkass: Not only does he go on about how John should have been discharged for leading his squad into a trap, he treats Dorian like he's about to go haywire at any moment.
Lack of Empathy: Most people would feel sorry for the guy who lost all of his team and friends on an ambush, lost a leg and spend a year and a half in a coma. Sadly it is Truth in Television for a significant number of cops.
Det. Valerie Stahl
Portrayed By: Minka Kelly
A younger officer impressed with John's record. An expert in criminal and gang sociology.
Badass in Distress: A capable officer that runs in a spot of trouble during the police station invasion and needs Dorian's help.
In "Blood Brothers" she finds herself in this spot again, finding herself the hostage of the clones of the Villain of the Week. When the police find their ruse compromised during the exchange, Stahl elbows her captor and successfully makes a break for it.
Brainy Brunette: is an exellent profiler. She also came out on top in a duel of wits against another Chrome who was impeding her investigation at a "chrome party" of sorts.
Brown Eyes: And very soulful too, as noted by John and Dorian both.
Pro-Human Transhuman: Even though she's a chrome she doesn't seem very enthusiastic about the practice and states that she doesn't get along with others in the movement. One girl she interviews comments that it's unusual for a chrome to be a cop.
Ship Tease: She's clearly interested in more than just John's record.
The MX-43 series is a battle-ready militarized humanoid android closely resembling human beings.