Literature:
* Tom Sawyer: The mischievous protagonist of Mark Twain's classic novel, *The Adventures of Tom Sawyer.*
* Tinker Bell: The mischievous and magical fairy from J.M. Barrie's *Peter Pan*.
* Tolkien, Bilbo: The titular character in J.R.R. Tolkien's *The Hobbit*.
* Tarzan: The ape-man raised by gorillas in Edgar Rice Burroughs's novels.
* The Terminator: The cybernetic assassin from the *Terminator* franchise.
* Thorin Oakenshield: The dwarven king in *The Hobbit* by J.R.R. Tolkien.
* Theoden: The King of Rohan in *The Lord of the Rings* by J.R.R. Tolkien.
* The Time Traveler: The protagonist in H.G. Wells's *The Time Machine.*
* Tyrion Lannister: The "Imp" from George R.R. Martin's *A Song of Ice and Fire* series.
* Trillian: The astrophysicist from Douglas Adams' *The Hitchhiker's Guide to the Galaxy*.
Movies:
* Tony Stark/Iron Man: The genius, billionaire, playboy, philanthropist from the *Iron Man* franchise.
* Terminator, The: The cyborg assassin from the *Terminator* franchise.
* Thor: The Norse God of Thunder in the Marvel Cinematic Universe.
* T'Challa/Black Panther: The king of Wakanda in the Marvel Cinematic Universe.
* Tinker Bell: The Disney fairy from the *Peter Pan* franchise.
* Toy Story, Woody: The sheriff toy in the *Toy Story* franchise.
TV Shows:
* The Doctor: The time-traveling alien from *Doctor Who*.
* Tony Soprano: The mob boss in *The Sopranos*.
* Ted Mosby: The main character in *How I Met Your Mother*.
* T'Pau: The Vulcan ambassador in *Star Trek*.
* Thorin Oakenshield: The dwarven king in *The Hobbit* film series.
* Tyrion Lannister: The "Imp" from *Game of Thrones*.
Video Games:
* Tifa Lockhart: A fighter in the *Final Fantasy VII* series.
* The Legend of Zelda, Link: The main character in the *Legend of Zelda* series.
* Tony Hawk: The skateboarder in the *Tony Hawk's Pro Skater* series.
* Travis Touchdown: The main character in the *No More Heroes* series.
* Tomb Raider, Lara Croft: The adventurous archaeologist in the *Tomb Raider* series.
This is just a small selection, and there are many more fictional characters beginning with "T" out there!