First Life[]
Shubble started off as a Shadow Crawler. She dubbed herself "Shadow Girl", and created a greenhouse with very dim lighting. Joey became her personal shulk body guard. A task force was made, consisting Fwhip, Sausage, Lauren and Meghan.
In Episode 5 of her series, she was going to ask Angel Sausage for an exorcism, but he had become a half-wither at that time.
She created a league of villains, consisting of Scott, Sausage and herself. Their goal is to blanket the entire world into an eternal darkness. She later left the group, after Scott and Sausage revealed they want to murder other people, and she is not willing to do that.
After she left, she went over to Joey's house to apologize and return his lanterns, but he didn't forgive her and stated that he wouldn't be her friend unless she stopped being a shadow girl. Shelby went back home and thought about trying to be nice in the day, but then decided to be fully evil, before being blown up by a creeper.