Scorpion (TV series)

as Walter O'Brien, is a genius with an IQ of 197. He was arrested for hacking into NASA's mainframe as a child, seeking a set of blueprints to put on his bedroom wall. He has a hard time handling emotional situations. Walter is incredibly intelligent, but also has a very low EQ. He is blunt and does not really care how his words affect others, causing him to come off as arrogant and rude. Due both to his high IQ and low EQ, he has problems connecting with people, even geniuses he has known for years. He fears being alone, though he once claimed to not have feelings, a notion he has since rejected. He is confident and when he sees a problem, he wants to solve it. He cares for his friends, so much so that he is willing to risk his life for them without a second thought. When he believed he was going to die, he told them stories of his fond memories of them, his way of telling them he loved them. He has occasionally said warm words to them, but rarely. Not only does he not often express emotions, but also when faced with grief or anger or other extreme emotions, he compartmentalizes his feelings until something triggers them and then they all come gushing out. His inability to express emotions normally stems mainly from the fact that for most of his life, he only ever connected with two people - his sister, Megan, and his surrogate father, Cabe Gallo. His relationship with Megan was very loving and the only friction in it was caused by their different views on her multiple sclerosis. Walter can be selfish and arrogant at times, but at heart is a kind individual who is always willing to help others and lay down his life for them, if need be, especially for his loved ones.

Elyes Gabel

as Paige Dineen. Her mother had her when she was 17, and wound up going to jail for various kinds of fraud for a few months periodically, so Paige would lie to her friends and say her mom was a saleswoman. Eventually, her mom left. Because of the loss of the love of his life, her father never took her trick-or-treating, he just bought a bag of candy and put it on the front porch with the light off while Paige and he watched "It's the Great Pumpkin, Charlie Brown". At 22, Paige had her son Ralph with her then-boyfriend Drew, but eventually, he left, telling Ralph he was going to see a movie. When Ralph was three, they were evicted, their stuff picked over at the curb, and she walked with him for blocks. She found a diner with a help-wanted sign, used her last two dollars to buy him an ice cream, interviewed, and convinced Nemos to give her an advance. She worked there until she met team Scorpion. She now serves as office manager for the team and helps to "translate" the real world for them, to help them interact with the people they meet. In turn, the team helps her understand her genius son, Ralph. Paige is very kind, caring, and emotional. Not only is she a great mother to Ralph, but also she plays the role of the team's mother, as she takes care of them, makes sure they eat, socialize, and have fun. Though Paige is not one of the geniuses, she manages to fit in on numerous situations. While she is not an intellectual genius, because she has humanitarian and social knowledge that none of her other teammates possess, she is occasionally the one with the right solution. Paige is very empathetic, and she likes to embrace that, and help others embrace it, as well.

Katharine McPhee

as Tobias "Toby" Merriweather Curtis, M.D., is a Harvard-trained psychiatrist with an IQ of 170, which is the lowest on the team. Toby serves the team as a behaviorist, "reading" people whom the team encounters. His gambling addiction occasionally causes trouble for the team and him. Toby was raised in Brooklyn and attended PS 90 in Coney Island. His mother was clinically bipolar, and his dad often forgot he was there because Toby's mom's disorder drove him crazy. Toby decided to become a psychiatrist to help his parents. His father would also take him to tracks on Christmas Day, and later to pay for school, Toby began to gamble, which led to an addiction and often trouble with loan sharks. His fiancée left him because of his addiction. He received his doctorate when he was 17. Toby is a narcissist with a slight dusting of addiction tendencies. He is usually humorous, but can become very serious in appropriate situations (for example when Happy Quinn is in danger). He usually jokes in inappropriate situations, as well. He makes these jokes to cover his true feelings about both his failed previous engagement and his parents’ mental issues that he failed to cure. He met Walter at the Cornet Room, a sleazy casino where he hustled. Walter intervened and bailed him out, just as he was about to receive a beating from the pit boss. He starts dating Happy and they are later married.

Eddie Kaye Thomas

as Happy Quinn, is a gifted mechanical engineer with an IQ of 184. She was named for her parents' favorite song, R.E.M.'s "Shiny Happy People". Her mother died giving birth to her, which led to her father becoming an alcoholic, so he gave her up for adoption because he thought he was an unfit parent. Happy never found a real home, constantly moving from foster home to foster home. Many of these homes promised they would be the last one, but inevitably sent her back. This could be why she has a difficult time interacting with and relating to others. Eventually, she found a cousin who owns a mechanic shop in Phoenix, Arizona, where she became interested in the profession. Happy has a hostile exterior, which is somewhat ironic considering her name is happy and generally she is not happy. The trauma in the foster system caused her mistrust of people. She possibly has PTSD from her trauma, and her symptoms include flashbacks, aggression, and avoidance of certain memories. She normally keeps her emotions in check, but gets angry quickly and tries to deal with her pain by turning it into rage. Despite being closed off, she truly does love her friends. Toby and she start dating and are later married.

Jadyn Wong

as Sylvester "Sly" Dodd, is a gifted mathematician and statistician with an IQ of 175; he is described as a "human calculator". He is a highly sensitive person and struggles with obsessive–compulsive disorder and anxiety, and harbors fears of germs, air transportation, and boats and open water. He has more phobias than can be counted (including claustrophobia and ornithophobia) and an eidetic memory. Sly's phobias can be limiting, but he is a courageous man who fights through those fears during times of distress. His parents were frustrated with him, as he was a disappointment to them and sent him to live with his uncle before Christmas one year. However, at the age of 16, he hacked a bank and stole $2,500, and ran away. Eventually, he ended up alone, broke, and scared, "contemplating bad things", until the bank's forensic analyst tracked him down. Walter never reported him to the bank. Once, his father gave him weights as a gift, as his father wanted him to be into sports. He was married to Walter's sister Megan before she died.

Ari Stidham

as Agent Cabe Gallo, is a former Marine and was an FBI agent before joining Homeland Security; Gallo initially recruits the team to fix a serious air traffic control problem; afterwards, he asked them to become a liaison team to tackle difficult missions that the government does not have the human resources or technological prowess to handle. When he was younger, he was married to a woman named Rebecca, with whom he had a daughter, Amanda, who died of a terminal illness at a young age with him by her side. He divorced Rebecca, but he only asked for their house. He first met 11-year-old Walter when he was the agent who was sent to investigate the NASA hacker, and he recruited Walter to work for the government. He was Walter's handler and father figure for five years until he asked Walter to design some tracking software for "humanitarian purposes". However, the software was really used to bomb Baghdad and kill 2,000 civilians. Walter broke all ties with Cabe, but was continuously tailed thereafter by Homeland. Cabe is an outgoing man who seeks to help those he loves, and seems to have a lot of trust in his people. In the show, Cabe demonstrates this trust to his surrogate son Walter, with whom he had difficulties in the past. Walter even states outright near the end of season three that out of all the crew, Cabe trusts him the most. Cabe is a very forgiving person, given Walter's actions in the past, but when Allie, his girlfriend, betrays Sylvester by posting humiliating videos of him under the instruction of her boss, Cabe cannot forgive and ends the relationship. With Sylvester’s encouragement, they later get back together.

Robert Patrick

as Ralph Dineen (recurring season 1, main seasons 2–4) is Paige's son; he is initially believed to be a troubled child before meeting and interacting with Walter, who tells Paige that he is actually a genius. He interacts well with the team, and on occasion, assists with cases. Ralph was born to Paige Dineen and Drew Baker, and unbeknownst to them, was a genius. His father left when he was young, saying he was going to go see a movie, so Ralph had little memory of his father. Later, when Ralph had a sense of math, he started counting how many movies his dad would have seen until the present day. He has an IQ of 200.

Riley B. Smith

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Scorpion

Walter O'Brien