Because you like Maximus Decimus Meridius in Gladiator

Years of brutal winters, foreign invasions, and crippling loneliness have left Russia's mental state far from wholly intact. See them in Axis Powers Hetalia.

A crabby troll, Karkat Vantas is perpetually angry about his lot in life. See them in Homestuck.

Alex Dunphy's self-reliant intelligence comes with a healthy dash of sarcasm. See them in Modern Family.

If it means fulfilling her ambitions, Satsuki Kiryuin will show neither shame nor hesitation. See them in Kill la Kill.

Stella Grant is an organized, orderly optimist living with a dangerous disease. See them in Five Feet Apart.

Daria Morgendorffer is so defensive that she actively works to make people dislike her so that she don't feel bad when they do. See them in Daria.

Mitchell Pritchett prefers to have a place for everything and everything in its place. See them in Modern Family.

Knuckles the Echidna is a 16-year-old red echidna (aka a spiny anteater) and guardian of the ancient Master Emerald. See them in Sonic the Hedgehog.

Britta Perry has never met a cause she couldn't passionately champion—at least for a little bit. See them in Community.

Funny, self-destructive, and in her own head, Fleabag has spent most of her adult life using sex to deflect from the screaming void inside her empty heart. See them in Fleabag.

Mac is a karate-chopping, beer-chugging schemer. See them in It's Always Sunny in Philadelphia .

David Rossi may chase serial killers for a living, but he's more interested in what wine pairs well with tonight's parmigiana. See them in Criminal Minds.