Because you like Slartibartfast in The Hitchhiker's Guide to the Galaxy
Carl Fredricksen is a crotchety old man who may just have it in him to take one last, great adventure. See them in Up.
A benevolent madman with a blue box, The Doctor is traveling through time and space to heal the wounds of the universe. See them in Doctor Who.
Gru's more misunderstood than evil, and if he'd rule over the world like he takes care of his three daughters, we'd be in good hands. See them in Despicable Me.
She's mostly doom and gloom, but you'd get nowhere without Sadness. See them in Inside Out.
As a scaring Assistant, Mike Wazowski frightens children to collect their screams to be used as a power supply for the city. See them in Monsters, Inc..
Shrek is a nasty-on-the-surface ogre with a heart of gold and an earful of wax. See them in Shrek.
WALL-E is a quirky little romantic robot cleaning the wasteland known as Earth. See them in WALL-E.
John Watson is haunted by his past (who isn't) but he's starting to branch out with some help from a world class detective. See them in Sherlock.