Spoiler Alert: WARNING! This page happens to contain a lot of heavy spoilers that are all originated from the Overlord Light Novel series written by the author Kugane Maruyama. To every Anime-only watchers and Manga-only reader out there viewing this warning, please mindfully consider your decision first before choosing to expose yourself on reading the information below. If you're not currently up-to-date with the main source material in the official books, do consider staying away from the page for non-spoiler sake until you actually read it first ahead of time.
Spriggans (スプリガン) are a demi-human race native to the Abelion Hills.
Spriggans were fundamentally a kind species and those of their race with evil tendencies were very rare. That said, both good and bad ones were unmanageable when they went on a rampage.
Spriggans could freely change their size from small to large.
In English lore, Spriggans were said to be the bodyguards of faeries. Although small, they were usually considered to be the ghosts of giants, that is the reason why they could freely change their size from small to large.