Because you like Ellen Ripley in Alien

When the safety of Hyrule is at stake, Princess Zelda does not hesitate to sacrifice herself for the good of the land. See them in The Legend of Zelda.

Holland March is known to wake up hungover in full bathtubs. See them in The Nice Guys.

Xander Harris' life motto: laugh in the face of danger and then hide until it goes away. See them in Buffy the Vampire Slayer.

Dominic Toretto lives his life "a quarter mile at a time", and he burns through those miles faster than anyone. See them in The Fast and the Furious.

Charlie Bucket may be down-on-his-luck, but his spirits are always sky high. See them in Charlie and the Chocolate Factory.

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

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

Winry Rockbell is an energetic tomboy mechanic with an empathetic streak. See them in Fullmetal Alchemist.

Christian is a romantic who for some reason won't stop singing everything he feels. See them in Moulin Rouge.

Keeping your cool is just as useful in the underworld as in war, and Michael Corleone is stone-cold. See them in The Godfather.

With his own ship, Peter Quill calls his own shots, and gets to fly from planet to planet blasting '70s pop hits and picking up alien chicks. See them in Marvel Cinematic Universe.