Because you like Tommy Pickles in Rugrats

In Ziva David's world, you grow up fast; you don't have a choice. See them in NCIS.

Leatherface's moods change with his masks. See them in The Texas Chainsaw Massacre.

Kristoff may seem standoffish, but this ice harvester has a warm heart. See them in Frozen.

Tom Haverford is set on being a world-renowned entrepreneur who dates models. Problem is, he's stuck in Indiana with a lazy business partner. See them in Parks and Recreation.

A poised, stately man-out-of-time, Ichabod Crane typically faces the modern world with wry quip. See them in Sleepy Hollow.

Rick Dalton is an aging actor with insecurity issues. See them in Once Upon a Time in Hollywood.

Blunt but anxious, Gretchen Ross bonds most easily with those who have lived tough lives like she has. See them in Donnie Darko.

Cady Heron is the new girl in town who's also new to the world of high school, period. See them in Mean Girls.

Topanga Lawrence has been a put-together intellectual since basically the moment she could talk. See them in Boy Meets World.

Warm and caring, Kitty Forman acts like a mom towards all of her kids' friends. See them in That '70s Show.

Charlie is a Type A theater director dealing with something out of his control: a painful divorce. See them in Marriage Story.

Tina Goldstein is better at getting the job done than following the rules. See them in Fantastic Beasts and Where To Find Them.