Katrina

Katrina was a girl whom Johnny a ghost knew as a young boy. She later came back to haunt him when they investigated a haunting in Gmod Scary Ghost HUNT Horror Map! Part 2 (Garry's Mod)

Katrina is a ghost woman in the ''Gmod Scary Ghost HUNT Horror Map! Part 2 (Garry's Mod) and Gmod Scary Ghost HUNT Horror Map! Part 2 FINALE (Garry's Mod)'' videos. Originally thought to be a ghost using Johnny Ghost's memories to emotionally manipulate him, she later revealed to be real thing, haunting along with another ghost.

Biography
Katrina was a friend of Ghost and Toast during their youth, who apparently died young, which severely traumatised Ghost.

Many years later, she unleashed several other ghosts and zombies in order to get his attention. However Ghost and Toast were caught in a time warp at the time and were both also zombies.

Personality
Not much is known about her personality, as we only see her ghost during her appearance

Johnny Ghost
Katrina and Johnny knew each other for an unspecified amount of time before her demise. They seemed to have had a close relationship while she was alive, as evidenced by Johnny's distress at her appearance and revealing that he had to come to terms with her death.

Johnny Toast
Katrina and Toast do not have much interaction. Toast did try to speak in Ghost's place, though she quickly vanished before any communication was made.

Trivia
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 * At the time of her death, Johnny Ghost had to come to terms with it.\
 * Johnny Ghost and her knew each other\
 * Johnny Ghost felt some amount of guilt, as he is distressed at her appearance along with telling Toast it "wasn't his fault"\
 * She haunted the area along with a different Ghost\
 * She may be related to Barnacle