Johnny Toast's family

No one seems to know very much about Toast's family. One possibility is that Toast's family isn't very nice to him and don't really think of him as part of the family, that may be why Toast is what you may call, a little on the crazy side of things. But none the less Ghost still likes him as a partner in crime and best friend. Ghost is more likely the only actual "family" Toast has, because there is one word to describe Toast: Outsider. He an outsider among his family. Unlike Toast, Ghost has no family we adventurers know of but, I'm sure they are out there. (Incorrect: He hasTommy Casket, his mother who isn't dead, and apparently he has a sister who lives on the East Coast.

Gavin/Unnamed Twin Brother
Kidnapped and impersonated him during an investigation. Johnny's brother was running a money-printing scheme and covered it up by staging a haunted house, complete with fake zombies. The fandom has since named him Gavin. Gavin had previously been mistaken for Toast when he and Uncle Charlie tried to steal the money from the bank with Aimée and Dread Pirate Zviggles.

Unnamed Sister
Married a man named Brian. Toast was attending this function, and as a result was unable to attend Johnny Ghost's investigation into Boxfriend's haunting of the house, and consequently Johnny's discovery of the picture of his father, Tommy Casket.

Jenny
Works as a policewoman, which led Ghost to mistake Barnacle for her. May be the unnamed sister above.

Mother-in-law
Accoding to Johnny Ghost, she "could actually be a mythoilogical cave troll".

Mother
Is currently serving time in prison. Didn't Pprove of Johnny Ghost getting Johnny Toast in dangerous situations.

Father
Suggested to be rich and deceased.

Queen Elizabeth II
Apparently "used to slide down the staircase on a mattress". Is suggested to be the Queen by Johnny Ghost, which would explain why his impression of her is so convincing.