Because you like Robin Scherbatsky in How I Met Your Mother

He's the great Black Star, and he's come to assassinate you. See them in Soul Eater.

Who needs friends when you're the King of Duelists? See them in Yu-Gi-Oh! .

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

Ciel Phantomhive is a haughty teenage nobleman who doesn't suffer fools gladly. See them in Black Butler.

Hedwig is a lost soul with a punk rock spirit. See them in Hedwig and the Angry Inch.

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.

Spike is punk meets vampire meets romantic poet. See them in Buffy the Vampire Slayer.

The cutest kitty this side of the galaxy, Nepeta Leijon is mischievous, caring, and obsessed with romance. See them in Homestuck.

Maka is determined to collect and purify 99 Kishin eggs– human souls that have been corrupted by evil– and one witch soul. See them in Soul Eater.

Steven Universe is an excitable youth who likes junk food and trying to save the world. See them in Steven Universe.

When Rin Matsuoka is not swimming, he mostly spends his time brooding or listening to angry Dubstep. See them in Free! Iwatobi Swim Club.

There are a lot of rules in their society for women like Emily Dickinson. But Emily is a rule-breaker. See them in Dickinson.