
A wraith
Wraiths are hostile mobs found In The Desert Temples, The Soulsand Valley, and The Creeping Winter DLC in Minecraft Dungeons, They summon up blue flames to a 3×3 area space, Wraiths are useless because they're a waste of your time, There is a Boss version of it, It's Called The Wretched Wraith.
It is a ghost like being wearing a dark-blue coat, it also has glowing blue eyes and a glowing blue mouth, it is also a skeleton, it has no legs, so it's legless because it's a ghost, it also has a glowing bottom half of their coat.