Storybook baddie (4)
'storybook baddie' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for ogre that I've seen before include "Cruel, fearsome person" , "'Demon, fiend (4)'" , "Giant of folklore, eats humans" , "Brute" , "Fairy tale monster" .)
(Other definitions for giant that I've seen before include "Colossus" , "Extremely large (person)" , "Jumbo" , "Huge person" , "Ogre" .)