Based on a typo of ghoul in an OD&D encounter chart it became a full monster in Moldvay B/X Basic D&D.Thoul
Thoul (5e Creature) - D&D Wiki
www.dandwiki.com
Not quite a hobgoblin, not quite a ghoul, not quite a troll. A nice curveball to throw into goblinoid groups
and the first weird creature to really blow my mindBased on a typo of ghoul in an OD&D encounter chart it became a full monster in Moldvay B/X Basic D&D.