Because you like Hoban Washburne in Firefly

Gruff and sarcastic, Detective Harry Dresden use unconventional ways to track down perps, including using magic and the supernatural. See them in The Dresden Files.

A poised, stately man-out-of-time, Ichabod Crane typically faces the modern world with wry quip. See them in Sleepy Hollow.

There must be quite a lot of fellows who haven't got anybody to bring them tea in the morning. Bertie Wooster is lucky to have his valet, Jeeves. See them in Jeeves and Wooster.

Cyclops shoots lasers out of his eyes, destroying anything in his line of sight. See them in X-Men Series.

Michael Bluth is the only sane person in a family of eccentrics. At least, that's how he thinks of himself. See them in Arrested Development.

Christine Palmer is a great surgeon and an even better friend. See them in Marvel Cinematic Universe.

Dolores Umbridge keeps her villainy hidden (albeit poorly) behind a sheen of sugary pink politeness. See them in Harry Potter Series.

A jazz musician, Sebastian Wilder is passionate about his music and his life. See them in La La Land.

Andy Dwyer might not be completely literate, but he makes up for it in spirit. See them in Parks and Recreation.

Winn Schott is just your friendly neighborhood superhero support system. See them in Supergirl.

Foggy Nelson is a principled small-time lawyer fighting for fellow little guys. See them in Marvel Cinematic Universe.

It's hard enough for Marta Cabrera to be part of a murder investigation, but when you can't lie? See them in Knives Out.