Tv is full of many characters... here are some of the most intelligent fictional characters out there
http://www.ranker.com/list/the-most-intelligent-people-on-tv/luna_,
Dexter Morgan
Dexter Morgan from the series "Dexter" is a forensic blood spatter analyst who works for the fictitious Miami-Metro Police Department. In his spare time, he is a vigilante serial killer who targets other murderers who have evaded the justice system. He follows a code of ethics taught to him in childhood by his adoptive father, Harry Morgan (which he refers to as "The Code" or "The Code of Harry"), which hinges on two principles: Dexter can only kill people after finding conclusive evidence that they are guilty of murder, and he must dispose of all evidence so he doesn't get caught.
Dr. Gregory House
Dr. Gregory House, M.D. — typically referred to simply as House — is the title character of the American medical drama House. Portrayed by English actor Hugh Laurie, he leads a team of diagnosticians as the Head of Diagnostic Medicine at the fictional Princeton-Plainsboro Teaching Hospital in New Jersey based on Yale-New Haven Hospital.[1]House's character has been described as a misanthrope, cynic, narcissist, and curmudgeon
Sherlock Holmes
Sherlock Holmes from the hit series "Sherlock" is a highly functioning sociopath who is a consulting detective for the police, he has many enemies and can solve any case,his sarcasm, wit and intelligence make him one of the best characters in modern tv.
Megan Hunt
Megan Hunt from the series "Body of Proof" is an es neurosurgeon and now medical examiner, she was a world class surgeon until she was in a car crash which effected her nerves preventing her from working, now she uses her vast medical knowledge to solve mysterious deaths,
Patrick Jane
Patrick Jane from the "Mentalist" is a consultant for the CBI ,he is on mission to avenge the serial killer "Red John" who killed his wife and daughter he was taught mind tricks by his father who worked as a con artist he is extremely observant and it makes him such a good character.
L
L from the anime series "Death Note" is a highly intelligent consultant he trusts only a few people and no one knows his real identity, he is faced with a mass killer "Kira
" or "Light Yagami" who possesses a book of death.
Spencer Reid
Spencer Reid from "Criminal Minds" is a schizophrenic with a photographic memory working with the BAU, having a photographic memory means Spencer remembers everything he has ever heard, read, seen etc, he is an essential part to the team and is a great character.
Jim Moriarty
James "Jim" Moriarty from the series "Sherlock" is one of Sherlock Holmes enemies he is highly intelligent and a criminal mastermind managing to break in to the Bank Of England and the Crown Jewles
Mycroft Holmes
Mycroft Holmes from the series "Sherlock" Older brother of "Sherlock Holmes" Possesses deductive powers exceeding even those of his younger brother, Mycroft is nevertheless incapable of performing detective work similar to that of Sherlock as he is unwilling to put in the physical effort necessary to bring cases to their conclusions.
Walter Sherman
Walter Sherman from the series "The Finder", is a middle class man who owns a bar in Florida, Due to brain damage suffered in Iraq, Walter is paranoid,suspicious and quirky, but it also somehow resulted in him now being able to find anything, seeing patterns where others wouldn't. His brain uses "Walter Math" to explain these things to him. In the backdoor pilot, in Bones, FBISpecial Agent Seeley Booth calls Walter's gift "The Finder Power", while Leo Knox calls it "Darna Shellah" and "Akashvani". Because of his ability to find anything