Because you like Al Capone in The Untouchables

When push comes to shove, the usually overly cautious Luigi has the heart of a hero. See them in Super Mario Bros..

Fiery, intelligent, and opinionated, Jo March rebels against the restrictions of her era. See them in Little Women.

Buttercup is a farm girl turned princess who'd do anything to have her old life back. See them in The Princess Bride.

Walter White's knowledge of chemistry allows him to cook astoundingly pure meth, leading to a rapid – albeit tumultuous – rise in the criminal drug world. See them in Breaking Bad.

Effy Stonem is cool and collected with a wry smile on her face and a cigarette between her lips. See them in Skins.

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

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.

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

Poison Ivy is a seductive, venomous botanist laments the fact that there are so many people to kill, yet so little time. See them in DC Extended Universe.

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

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.

As a scaring Assistant, Mike Wazowski frightens children to collect their screams to be used as a power supply for the city. See them in Monsters, Inc..