Because you like Bobby Singer in Supernatural
Greg Lestrade is gruff, loyal, and quietly competent. See them in Sherlock.
Rory Williams is a caring companion whose specialty is looking after others. See them in Doctor Who.
Gilderoy Lockhart's biggest idol is himself. See them in Harry Potter Series.
There's more to this sweet, caring landlady than meets the eye. See them in Sherlock.
David Nolan is a noble fairy tale prince with the heart of a hero, regardless of whether he can remember his past or not. See them in Once Upon a Time.
Jenny Flint is a devoted wife and daring crime fighter, which is pretty unconventional for a Victorian maid. See them in Doctor Who.
Henry Mills is an idealistic young boy with the heart of the truest believer. See them in Once Upon a Time.
The destroyer, Drax lives for one thing and one thing only: revenge. See them in Marvel Cinematic Universe.
Xander Harris' life motto: laugh in the face of danger and then hide until it goes away. See them in Buffy the Vampire Slayer.
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.
David Rossi may chase serial killers for a living, but he's more interested in what wine pairs well with tonight's parmigiana. See them in Criminal Minds.
Fiery and adventurous, Amy Pond is the sort of woman you'd want by your side on a journey through time and space. See them in Doctor Who.