Because you like Mary Poppins in Mary Poppins
The witty Aku would be an ideal dinner guest, if he weren't a demon. See them in Samurai Jack.
A man of the court, Lord Varys knows how to manipulate it better than anyone. See them in Game of Thrones.
Offred wisely keeps her head down even as she hopes for more. Unfortunately, hope is dangerous in Gilead. See them in The Handmaid's Tale.
Carol Peletier's credo: your strength comes from who you are, not who you used to be. See them in The Walking Dead.
Everything is fascinating to Octavia Blake who has been locked away for her entire life. See them in The 100.
An inter-dimensional demon, Bill Cipher dreams of a more chaotic Gravity Falls. See them in Gravity Falls.
Let's just say Sheldon Oberon is having an out-of-body experience like no other. See them in Jumanji.
When he's not working as a detective, Lucifer is driving around in a black convertible or having one-night stands. See them in Lucifer.
There is never a dull moment with Jim Moriarty: expect booze and sing alongs in between all of the homicide. See them in Sherlock.
Don't tell anyone Kate Austen was under arrest when the plane crashed. See them in Lost.
Michaelangelo is an above-ground crime-fighter by night, and a pizza-eating, sewer-dwelling mutant ninja turtle by day. See them in Teenage Mutant Ninja Turtles.
James Wilson is a compassionate doctor who willingly plays the sidekick. See them in House M.D..