Because you like Martin Crane in Frasier

In Ziva David's world, you grow up fast; you don't have a choice. See them in NCIS.

Talking to a stranger on a train is the best decision Jesse Wallace ever made. See them in Before Sunrise.

Greg Hirsch is new to the Roy family's cutthroat world of wealth and privilege. See them in Succession.

Sam Weir lives for the simple things in life: watching Saturday Night Live and reading comic books. See them in Freaks and Geeks.

Khan Noonien Singh is super strong, super smart, and out for revenge. He always seems to be two steps ahead of his enemies. See them in Star Trek Into Darkness.

Dante Alighieri is a crusader fighting his way to absolution. See them in Dante's Inferno.

There's erratic, and then there's Senor Chang. See them in Community.

Kilgrave is a domineering, abusive boyfriend. Then, add in the power of mind control. See them in Marvel Cinematic Universe.

Anya Jenkins has a real harsh bark to go with her demonic bite. See them in Buffy the Vampire Slayer.

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.

A Silurian lizard woman, Madame Vastra has a penchant for puzzles and interspecies romance. See them in Doctor Who.

A man of the court, Lord Varys knows how to manipulate it better than anyone. See them in Game of Thrones.