Shadow Figure

Shadow Danny is the antagonist of the tenth Goosebumps book, The Ghost Next Door, and its accompanying television adaptation.

History
He started following Hannah Fairchild around, whispering her name and pointing at her. He would often vanish when Danny Anderson appeared, making her believe that Danny was a ghost. He would also warn her to stay away.

Eventually, he revealed to Hannah that he is actually the ghost of Danny. Danny had gotten trapped in Mr. Chesney's house by a hire he helped start and Danny was destined to die in the fire, with Danny taking Shadow Danny's place in the Shadow Realm. When Hannah rescued Danny from the fire, he vanished forever.

In the TV episode, he has a more active role, teaching Hannah how to be a ghost. He also actively attempts to kill Danny, as he can't wait for him to die naturally.

Personality
In the episode, he is manipulative as he teaches Hannah to be a ghost to distract from saving Danny. He also lies to her by saying Danny is destined to die, while he merely wants to replace him.

Physical appearance
As a shadow, he is in all black with red eyes, and arms that are described as being as bony as twigs. When he reveals himself to be Danny's ghost, he has the same face, but with glowing red eyes his shadow self has.

Trivia

 * The TV episode credits him as Shadow Figure.
 * Diego Matamoros played Morgred in season one's "A Night in Terror Tower".