Because you like Estelle Costanza in Seinfeld
Mike Wheeler loves Dungeons and Dragons, even after his real life starts imitating the game. See them in Stranger Things.
Chanel Oberlin is a big fan of herself, and she can't see why anyone else wouldn't be too. See them in Scream Queens.
Elena Gilbert is the quintessential girl-next-door who gets involved with the new "boy" at school. See them in The Vampire Diaries.
If the benchmark is extraordinary, what do you do if you're not like Vanya Hargreeves? See them in The Umbrella Academy.
If Eleanor Shellstrop's true identity is revealed, she'll be sent to The Bad Place. See them in The Good Place.
The White Queen been treated horribly, but the day of her victory is almost near. See them in Alice in Wonderland.
Although Mako Mori may be small and quiet, she is a core of battle-hardened steel. See them in Pacific Rim.
Vengeance is William Wallace’s game. With his father, brother, and wife killed by the English, he slaughters the garrison and sacks cities. See them in Braveheart.
Sylar's victims are found all over the country, many with their brains removed. See them in Heroes.
A fight every now and then makes Dante's life a little more interesting. See them in Devil May Cry.