Jack Costa

"I killed Giuseppe, because he was abusive to me and the snakehead."

~ Jack speaking because he killed Giuseppe

Jackson Frederich Charles Costa is a character who first appeared in the seventh episode "The Murder of Giuseppe Costa" and that is confirmed for second season in the main cast, he is the killer of Giuseppe Costa he had several reasons to murder his father, how to be an abusive father, it is not known if Jackson wanted to kill Giuseppe, Jack ended up creating a potion or formula that makes him invisible when he swallowed the formula, he had a brief fight that resulted in Jack throwing Giuseppe out of the window