Stacie Casket

Stacie Casket is the late mother of Jimmy Casket/Johnny Ghost and the wife of Gregory Dave Casket.She died some time before Jimmy/Johnny's second birthday.It is possible and heavily implied that she was killed by her husband but he vehemently denies it.Her ghost, in the form of a tiny skeleton, appeared to Jimmy on his birthday and tried to help him escape but he refused to leave, she then went into her husband's dreams as a full sized skeleton and caused him to have a nightmare, it is unknown what happened to her ghost after this.

Conflicts With Established Lore
Her being dead and her husband being alive conflicts with previous videos that stated Jimmy/Johnny's father was dead and that his mother was still alive.

Trivia

 * In the video she debuted in, her husband said to Jimmy that "Your mother wasn't the woman we we thought she was" which may tie into why one of Jimmy's secrets was that his was a man.