TV Character Without Official Diagnoses

There are several characters who are thought to have an ASD, but their respective shows have never officially diagnosed them. 

1 & 2. "Dr. Temperance Brennan"  and "Dr. Zack Addy" on Bones
Portrayed by Emily Deschanel and Eric Millegan
Suspected Diagnosis: Asperger's
In an interview with Emily Deschanel she said, "Hart Hanson, the creator of the show, and I discuss, you know, that my character almost has Asperger syndrome, and, you know, if a maybe if it was a film, that I maybe specifically would have Asperger's," she said."If you look at the character of Zack, [Brennan's graduate assistant] played by Eric Millegan, he almost definitely has Asperger syndrome..." It has also been reported that Hanson and the other Bones team wanted Brennan to have Asperger's but FOX rejected the idea, saying the show would reach a larger audience without a diagnosis. Regardless, there is no official diagnosis for either character. I am a huge fan of this show, and I would not necessarily just to an Autism diagnosis for Deschanel's character. Temperance Brennan is socially awkward and has limited interpersonal skills, but that could be attributed to her life in foster care and finding comfort in science instead of the family she lost. I would agree that Zack's character is more likely to have Asperger's. 

3. “Dr. Spencer Reid” on Criminal Minds

Portrayed by Matthew Gray Gubler
Suspected Diagnosis: Asperger's and mild obsessive-compulsive disorder (OCD) 

Spencer's character is socially awkward, misses social cues, has several splinter skills involving science and math, and is extremely intelligent. In season 8, episode 3, a family is kidnapped, including their son who has Asperger's. Because of this exposure, Reid's new coworker slyly suggests that he may have Asperger's too, which Reid ignores. 

4. "Dr. Sheldon Cooper" on The Big Bang Theory
Portrayed by Jim Parsons 
Suspected Diagnosis: Asperger's and OCD
Series co-creator, Bill Prady said in an interview, "We write the character as the character. A lot of people see various things in him and make the connections. Our feeling is that Sheldon's mother never got a diagnosis, so we don't have one". It is clear that they chose to not label his behavior, even though he does have some symptoms that could be seen as Aspergerian. 

I find it very interesting that all these characters are highly intelligent and have doctorates (or multiple degrees) in science related fields. Multiple show creators and producers have stated they have avoided the official diagnosis because it comes with too much responsibility in accuracy portraying the characters and the mystery adds to the show's appeal. Since we have talked about the spectrum part of the disorder, it is possible for the audience to see these known imparments and believe they have a milder form, which is completely acceptable. It is also possible that chacters are just different and the audience wants to label them. Everyone has quirks and challenges, and not everyone who has social impairments has Asperger's.