Harrry Potter

They find a giant troll.

"It was a horrible sight. Twelve feet tall, its skin was a dull, granite grey, its great lumpy body like a boulder with its small bald head perched on top like a coconut. It had short legs thick as tree trunks with flat, horny feet. The smell coming from it was incredible. It was holing a huge wooden club, which dragged along the floor because its arms were so long."