Because you like Rick Mitchell in The Mitchells vs. the Machines
Aang is already a master airbender and once he learns to manipulate water, earth, and fire, he'll be truly unbeatable. See them in Avatar: The Last Airbender.
Nancy Wheeler is popular but independent, sheltered but gutsy. See them in Stranger Things.
Korra is stubborn, outgoing, and faced with huge responsibilities she might not be ready for. See them in The Legend of Korra.
Shrek is a nasty-on-the-surface ogre with a heart of gold and an earful of wax. See them in Shrek.
A contemptuous aristocrat, Violet Crawley is unafraid to exert her authority and voice her opinions, no matter how harsh they are. See them in Downton Abbey.
Told her son will one day save the world, Sarah Connor dedicates her life to training him to do just that. See them in The Terminator.
Kyoya Ootori is possibly the only person who could reasonably go from VP of a school club to ruling the world. See them in Ouran High School Host Club.
Ariel knows there's a whole other world above the sea, but exploring it comes at a big price. See them in The Little Mermaid.
Eren Jaeger will erase the Titans from this world until not a single one remains. See them in Attack on Titan.
A precocious 11-year-old, Satsuki Kusakabe is not quite as grown up as she pretends to be. See them in My Neighbor Totoro.
Hawkeye is most comfortable perched above the action, keeping an eye on everything and using a well-timed arrow to save the day. See them in Marvel Cinematic Universe.