Skeletons are a popular form of physically manifested undead found throughout fiction, notably in works of fantasy, science fiction, and horror. Much like the Grim Reaper, they are commonly associated with death and decay. Unlike many adaptions of the stock zombie archetype, skeletons usually lack any flesh and are usually made up of only animated bones and/or trace muscles and ligaments. More than often, skeletons are portrayed with motor skills as good as they were in life despite lack of visible flesh compared to the former. They are also much more intelligent than traditional zombies.