Because you like Martha Jones in Doctor Who
Klaus Baudelaire's photographic memory saves the lives of his siblings many times over. See them in Lemony Snicket's A Series of Unfortunate Events.
Shy and nerdy, Gabriella Montez moved to Albuquerque and quickly became the toast of East High and a darling of the stage. See them in High School Musical.
Beloved by all, Lucy is the most corageous Pevensie. See them in The Chronicles of Narnia.
Irene Adler has to use both her brains and her body to survive. Luckily, she's usually the most brilliant person in the room. See them in Sherlock.
If anyone can speak truth to power, it's Atticus Finch. With elequent monologues, he forces everyone to face hard truths. See them in To Kill a Mockingbird.
Milo Thatch is an enthusiastic researcher without cynicism. See them in Atlantis: The Lost Empire.
With an abundant supply of alcohol, nice restaurants, and free will, Crowley is a demon who is thoroughly enjoying his time on Earth. See them in Good Omens: The Nice and Accurate Prophecies of Agnes Nutter, Witch.
For Morgana, sometimes wanting to do the right thing can led you down the wrong path. See them in Merlin.
Foggy Nelson is a principled small-time lawyer fighting for fellow little guys. See them in Marvel Cinematic Universe.
Cyclops shoots lasers out of his eyes, destroying anything in his line of sight. See them in X-Men Series.