Because you like Jessie Spano in Saved by the Bell
Jenny Flint is a devoted wife and daring crime fighter, which is pretty unconventional for a Victorian maid. See them in Doctor Who.
Anya Jenkins has a real harsh bark to go with her demonic bite. See them in Buffy the Vampire Slayer.
Chef is a swinging bachelor and former R&B singer with a leopard-skin upholstered couch and some great stories. See them in South Park.
Tina Cohen-Chang is a shy loner who becomes a fierce performer on stage. See them in Glee.
Toby Cavanaugh has trouble avoiding being manipulated. See them in Pretty Little Liars.
Linda Belcher doesn't prescribe to what society deems as "normal." She narrates her life through song, much to the alarm of everyone nearby. See them in Bob's Burgers.
Helena is a mentally unstable, childish, and completely merciless. And most of all, she's an unstoppable killer. See them in Orphan Black.
Cyclops shoots lasers out of his eyes, destroying anything in his line of sight. See them in X-Men Series.
Claire Standish is a popular, perfect princess who's deeper than she seems. See them in The Breakfast Club.
Let's just say Sheldon Oberon is having an out-of-body experience like no other. See them in Jumanji.
Faith has a chip on her shoulder and a stake in her hand to slay vampires in her town. See them in Buffy the Vampire Slayer.