Because you like Optimus Prime in Transformers
How is angel Aziraphale supposed to stop the apocalypse when Hell's forces misplaced the Antichrist somewhere? See them in Good Omens: The Nice and Accurate Prophecies of Agnes Nutter, Witch.
Hannah Horvath is kind of a mess, but she owns her messiness in a way few people do. See them in Girls.
Manipulative, gorgeous, and sharp as a tack, Blair Waldorf is a classic product of the Upper East Side. See them in Gossip Girl.
Eren Jaeger will erase the Titans from this world until not a single one remains. See them in Attack on Titan.
The Hastings family is old and powerful, and Spencer will do anything to continue excelling. See them in Pretty Little Liars.
Breaking bones and hearts, Callie Torres has figured out how to put the bones back together. But the hearts? Not so much. See them in Grey's Anatomy.
Jonathan Byers is a kindhearted outcast who tends to be in the wrong place at the wrong time. See them in Stranger Things.
Yuri Plisetsky's a hotheaded punk off the ice, incredible artist on it. See them in Yuri on Ice.
Years of being the less desirable Vargas sibling have given Romano quite an inferiority complex, as well as the temper to match. See them in Axis Powers Hetalia.
Mac is a karate-chopping, beer-chugging schemer. See them in It's Always Sunny in Philadelphia .
While all of London is distracted with balls and engagements, Eloise is enlisted by the Queen of England to hunt down the mysterious town gossip. See them in Bridgerton.