Because you like Aziraphale in Good Omens: The Nice and Accurate Prophecies of Agnes Nutter, Witch
Detective Alec Hardy doesn't let anyone get too close to him. See them in Broadchurch.
Guillermo is the best servant a vampire could ask for. For years now. Not that he's counting. See them in What We Do In The Shadows.
Usually the life of the party, Laszlo is now seriously planning the vampiric takeover of the New World. Or at least Staten Island. See them in What We Do In The Shadows.
Nandor is a relentless vampire who never admits he's wrong, loves glitter, and can't use a tablet. See them in What We Do In The Shadows.
Victor Frankenstein can create life, so he's pretty awesome if he says so himself. See them in Frankenstein.
A compassionate medical student, Martha Jones has found a Doctor she can really look up to. See them in Doctor Who.
There's more to this sweet, caring landlady than meets the eye. See them in Sherlock.
Rory Williams is a caring companion whose specialty is looking after others. See them in Doctor Who.
Kubo is a storyteller at heart who's tapping into his sense of adventure. See them in Kubo and the Two Strings.
Kilgrave is a domineering, abusive boyfriend. Then, add in the power of mind control. See them in Marvel Cinematic Universe.
Jenny Flint is a devoted wife and daring crime fighter, which is pretty unconventional for a Victorian maid. See them in Doctor Who.