Because you like Rincewind in Discworld
Severus Snape is a misanthropic potions teacher with a vindictive streak. See them in Harry Potter Series.
Winnie the Pooh is a chubby little cubby all stuffed with fluff. See them in Winnie the Pooh.
A good guy who's made some bad choices, Scott Lang is driven in his quest for redemption. See them in Marvel Cinematic Universe.
Basically a giant pillow come to life, Baymax is a medical robot created for the sole purpose of helping people. See them in Big Hero 6.
Genetically and cybernetically enhanced, Gamora was trained from birth to be one of the deadliest women in the galaxy. See them in Marvel Cinematic Universe.
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.
Make sure not to anger the Hulk or else he will transform into a giant green monstrosity and smash anything in his way. See them in Marvel Cinematic Universe.
Mystique is a shape-shifting mutant who, after too many disappointments, does not want to co-exist with humans. See them in X-Men Series.
Wolverine is a hot-blooded Canadian with an adamantium skeleton who's the best at what he does. See them in X-Men Series.
Light Yagami has a plan to make a better world, and morals won't stop him. See them in Death Note.
Daenerys Targaryen will take what is hers with fire and blood. Thankfully, she has some dragons by her side. See them in Game of Thrones.
