The BFG is a children's book by Roald Dahl and illustrated by Quentin Blake. It is about an orphan girl called Sophie (thought to have been inspired by Dahl's granddaughter Sophie Dahl) who finds herself in a land full of giants.
The BFG ("Big Friendly Giant") himself doesn't eat children, as he is a nice vegetarian. Sophie becomes the BFG's friend and they work to rid the world of the nasty human-eating giants.