Ladon

Ladon (ラドン, Radon lit. Dragon of Hera) is a former human who has become a Dreamer, a human who has been taken over by their fear and is stuck in an eternal nightmare, with the fear, who goes by the name of Ladon, taking charge of the body.

Trivia

 * Ladon's appearance is based off of Robin Hood from Ozmafia.
 * In Greek Mythology, Ladon is a serpent-like dragon who was, in some stories, slain by Hercules.