Because you like Benjamin Sisko in Star Trek: Deep Space Nine

Drusilla's hobbies include dolls, music, and killing people. See them in Buffy the Vampire Slayer.

Kate Beckett is a no-nonsense policewoman with a nerdy side. See them in Castle.

Don't tell anyone Kate Austen was under arrest when the plane crashed. See them in Lost.

Sarcastic and always complaining, C3PO is a droid that despite his quirks you always want by your side. See them in Star Wars Series.

Donna is boisterous and spunky traveller of the TARDIS, exploring worlds beyond the simple mundane enterprises of Earth. See them in Doctor Who.

Morpheus is wise enough to see into the bones of the world. See them in The Matrix.

Rory Williams is a caring companion whose specialty is looking after others. See them in Doctor Who.

A compassionate medical student, Martha Jones has found a Doctor she can really look up to. See them in Doctor Who.

Claire Temple is a dedicated nurse providing secret care to New York's vigilantes. See them in Marvel Cinematic Universe.

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.

Ultron is security software turned evil mastermind. See them in Marvel Cinematic Universe.

Working as a captain in the American Expeditionary Forces and a spy for British Intelligence, Steve Trevor wants to end World War I once and for all. See them in DC Extended Universe.