1. The adult Sheldon Cooper is a senior theoretical physicist at the California Institute of Technology, and for the first ten seasons of The Big Bang Theory shares an apartment with his colleague and best friend, Leonard Hofstadter ; they are friends and coworkers with Howard Wolowitz and Rajesh Koothrappali.
Some viewers have asserted that Sheldon Cooper's personality is consistent with autism spectrum disorder.
Co-creator Bill Prady has stated that Sheldon Cooper's character was neither conceived nor developed with regard to Asperger's, although Parsons has said that in his opinion, Sheldon Cooper "couldn't display more facets" of Asperger's syndrome.
The character of Sheldon Cooper was inspired by a computer programmer personally known to series co-creator Bill Prady.
Sheldon Cooper and his fraternal twin sister, Missy, were born on February 26,1980, at Lawrence Memorial Hospital in Galveston, Texas, and raised in Medford, a fictional small town in East Texas that is a three-hour drive from Dallas, along with their older brother, George Jr.
Sheldon Cooper once got his father fired when he told Mr Hinckley, a store owner, that George was stealing from the cash register.
In Young Sheldon Cooper, this is retconned: his father is a football coach who was fired from his coaching position in Galveston because he disclosed that other coaches were illegally recruiting players to their school, forcing the family to return to Medford.
Sheldon Cooper does drink, mostly beer, and is a loving father who is trying to understand his intellectually gifted son.
The only member of his family to have actively encouraged his work in science was his maternal grandfather, whom he cherished and affectionately called "Pop-Pop", and who died when Sheldon Cooper was five years old.
Sheldon Cooper's aunt was said to have encouraged his work in science by giving him medical equipment, "in case his work in physics failed, he'd have a 'trade' to fall back on".
Sheldon Cooper was interested in science from an early age, and was a child prodigy, although due to his behavioral quirks and his lack of humility about his superior intellect, he was bullied by classmates and neighbors.
However, in season 8's "The Space Probe Disintegration", Sheldon Cooper tearfully admits to Leonard that he is aware of how his behavior comes across.
Sheldon Cooper originally claimed to have a master's degree and two doctoral degrees, but this list has increased.
Sheldon Cooper is uncomfortable with human physical contact and has mysophobia, which makes his exceptionally rare hugs extremely awkward and painful-looking.
Sheldon Cooper has hemophobia and synesthesia, the latter being demonstrated when he described prime numbers as being red, twin primes as being pink and smelling like gasoline and Fudgesicles as tasting like the speed of light.
Sheldon Cooper has difficulty coping when asked to keep a secret, when he is interrupted, or when he hears arguing.
Sheldon Cooper is a notary public and uses his knowledge in law and contracts usually for his own advantage and is always distressed when challenged in a legal aspect that he cannot logically defend.
Sheldon Cooper has restraining orders from his heroes Leonard Nimoy, Carl Sagan, and Stan Lee, as well as television scientist Bill Nye.
Sheldon Cooper has sometimes shown empathy, including lending money to Penny without expecting it back at all and driving her to a hospital when her shoulder was dislocated.
Sheldon Cooper admits he is overly fond of koala bears munching on eucalyptus so much that he has a facial expression that he refers to as his koala face.
Alcohol often causes Sheldon Cooper to loosen up significantly, and it will cloud his judgment on occasion.
Sheldon Cooper's father George died before the start of The Big Bang Theory, when Sheldon was 14, while his mother Mary is a devout Baptist and loving parent.
Sheldon Cooper has two siblings: a twin sister, Missy, who is a tall, attractive brunette as an adult; and an older brother, George Jr.
The adult Sheldon Cooper has stated that both Missy and George Jr.
Sheldon Cooper is very fond of his maternal grandmother, whom he calls "Meemaw" and who calls him "Moon Pie".
Sheldon Cooper called his grandfather, who died when Sheldon was five, "Pop Pop".
Sheldon Cooper was very close to his grandfather, stating once that his grandfather is the only relative he had who encouraged him to become involved in science.
Sheldon Cooper has a maternal uncle, Edward, who is called "Stumpy" as the result of a time when he cleaned a wood chipper by hand.
Sheldon Cooper has a maternal aunt, Charlene, revealed in Young Sheldon when his mother told Meemaw that she made dinner for "Charlene and Edward" more times than she did.
Sheldon Cooper says that he wanted to name him Leonard Nimoy Cooper, but his wife Amy objected.
Sheldon Cooper constantly belittles Leonard and dismisses his work, yet at the same time considers Leonard his best friend, as they used to live together and can tolerate each other: in "The Space Probe Disintegration", Sheldon Cooper admits to Leonard that he is aware of how difficult he can be, and tearfully expresses his gratitude for having Leonard in his life in spite of himself, causing Leonard to break down beside him.
Sheldon Cooper once idolized fictional prodigy Wesley Crusher from Star Trek: The Next Generation, portrayed by Wil Wheaton, until Wheaton did not show up at a convention attended by Sheldon in 1995.
Sheldon Cooper had spent 15 hours on a bus travelling to the convention during which time he was forced to break his rule about urinating in a moving vehicle.
In "The Spoiler Alert Segmentation", Leonard temporarily moves out and Amy proposes that she would be his perfect roommate and tries to move in, though Sheldon Cooper is uncomfortable with this change in their relationship.
Sheldon Cooper feels his relationship with Amy is going fast on its own, but Amy argues he is taking things too slowly and does not properly bestow on her unlimited affection.
Sheldon Cooper glumly reveals that he had been planning on proposing to Amy with his grandmother's ring - a family heirloom.
Sheldon Cooper is bothered by this notion and challenges Barry in a duel that will end three years hence.
In "The Earworm Reverberation", Sheldon Cooper cannot get a song out his head, but after suddenly remembering the title and the lyrics, he realizes that the song was about Amy and that she changed his life for the better, which prompts him to go to her apartment to profess his love.
Sheldon Cooper finds Amy on a date with Dave, who has a great adoration for Sheldon because of his intellect.
Late in season 12, Amy is preparing Sheldon Cooper to accept the prospect of having children by getting him to have fun experimenting with the Wolowitz children.
Sheldon Cooper refers to Howard as "Astronaut Howard Wolowitz", exhibiting, for the first time, some level of pride in having a friend who was an astronaut.
Sheldon Cooper admits that he agrees with what Leonard said in the Pilot episode, that Leonard and Penny's children will be "smart and beautiful".
Sheldon Cooper was nominated again for the same award on July 8,2010, and won the award on August 29,2010.
Sheldon Cooper was nominated again for the same award in 2010 and 2012.
Some viewers have asserted that Sheldon Cooper's behavior is consistent with the classification of the autism spectrum that used to be known as Asperger's syndrome.
Sheldon Cooper often gets talked about in terms of Asperger's or OCD.
Sheldon Cooper has a thing with germs, he has a thing with numbers, he's got a lot of that precision that we see in OCD.