Because you like Josh Lucas in Clueless
Herion is Mark Renton's favorite drug. He sniffs it, smokes it, swallows it, sticks it up his arse, and injects it into his veins. See them in Trainspotting.
Barry Allen is a nerd, forensics expert‚ and superhero with supersonic speed who is determined to solve his mother's murder. See them in DC Extended Universe.
Kara "Starbuck" Thrace will beat you in cards, drink you under the table, then fly circles around you in her fighter plane. See them in Battlestar Galactica.
Where Ash comes from, food and shelter pay for themselves. Even as a penniless vagrant, he is able to pursue his dream of becoming a Pokémon Master See them in Pokemon.
Rose Hathaway is a reckless, rebellious smartass who's training to be a royal vampire guardian. See them in Vampire Academy.
Winry Rockbell is an energetic tomboy mechanic with an empathetic streak. See them in Fullmetal Alchemist.
Clank is the quintessential rational, intelligent robot sidekick. See them in Ratchet & Clank.
Hans Landa doesn't seem to have issues with Jews, but he hunts them because he's determined to do his job well. See them in Inglourious Basterds.
A nurturing, selfless, and level-headed leader, Makoto Tachibana loves looking out for his friends. See them in Free! Iwatobi Swim Club.
Edward Elric has a quick mind along with a quick temper. See them in Fullmetal Alchemist.
Everyone is just a chess piece, and Izaya Orihara is a master player. See them in Durarara!!.