Because you like Juliet Burke in Lost

The son of Death has an obsession with perfection and symmetry. See them in Soul Eater.

Helpful and courageous, Kirby is a playful, fun-loving little guy. See them in Kirby.

Shrek is a nasty-on-the-surface ogre with a heart of gold and an earful of wax. See them in Shrek.

Hiccup Haddock III may be the only Viking nerd in recorded history. See them in How to Train Your Dragon.

Her interests include martial arts, interrogation, and hacking. Natasha Romanoff is the ultimate spy. See them in Marvel Cinematic Universe.

Nemo is a small fish in a vast ocean, but he dreams of seeing it all. See them in Finding Nemo.

Harry Potter is the boy who lived! See them in Harry Potter Series.

Unaware of the fact that he's a toy and made of plastic, Buzz Lightyear is a spaceman on a mission fully of snappy catch phrases. See them in Toy Story.

Albus Dumbledore oversees the most unsafe school in recorded history, with Dementors and giant arachnids run amok. See them in Harry Potter Series.

Brilliant, violent, and only a little insane, the Joker doesn't listen to anyone except the voices in his head. See them in DC Extended Universe.

Although Penny's friends have genius-level IQs, they regularly come to her for advice and insight. See them in The Big Bang Theory.

When the going gets tough, Rick Grimes gets tougher. It's a very useful trait when the world goes to hell. See them in The Walking Dead.