Because you like Jack Harkness in Doctor Who
Detective Alec Hardy doesn't let anyone get too close to him. See them in Broadchurch.
Despite the war-torn world around him, Mal Reynolds still holds onto the shred of hope that life can be more than just living another day. See them in Firefly.
Part archaeologist, part philosopher, part politician, Jean-Luc Picard is an unashamed intellectual who runs a tight ship. See them in Star Trek: The Next Generation.
Merlin is half awkward teenager, half super-powerful wizard. He serves Prince Arthur of Camelot during the day and illegally learns magic at night. See them in Merlin.
As a doctor-in-training, John Dorian should have his head in the game. But most of the time, it's in the clouds. See them in Scrubs.
There's more to this sweet, caring landlady than meets the eye. See them in Sherlock.
For Morgana, sometimes wanting to do the right thing can led you down the wrong path. See them in Merlin.
His name is Inigo Montoya and whoever killed his father should be prepared to die. See them in The Princess Bride.
Irene Adler has to use both her brains and her body to survive. Luckily, she's usually the most brilliant person in the room. See them in Sherlock.
This android may not have emotions, but Lt. Commander Data's curiosity about humanity is endless. See them in Star Trek: The Next Generation.
Greg Lestrade is gruff, loyal, and quietly competent. See them in Sherlock.
James Gordon happens to be the one guy in Gotham City with proper morals who doesn't also run around in a cape. See them in DC Extended Universe.