Sarah is the second oldest daughter of Hunson Abadeer and Marsha's older sister. Growing up together, Marsha and Sarah are extremely close, sharing a Finn-and-Jake type of bond.
Rosaline is the youngest daughter of Hunson Abadeer and Marsha's little sister. In typical little sibling fashion, Rosaline is often a nuisance to Marsha. Despite how much she annoys her, Marsha cares about her little sister.
Octavia is the only child of Stolas and Stella of the Ars Goetia. Love of Marsha's life. Has been Octavia's support through her father's death, her mother's hospitalization, and goetia politics.
Morty Smith is the youngest child Beth and Jerry Smith. While he is currently attends high school, he often goes on adventures with Rick Sanchez, his grandfather. It was through these adventures where he met Marsha, who he developed feelings for.
Eath is a daemon who resides in a cabin in a forest alongside her best friend Hax. While they're friends, Marsha does have feelings for the teen daemon.
Ava is teen girl whose soul has since become melded with a demon. They are currently friends with Marsha having feelings for the teen. Unbeknownst to Marsha...so does Ava.
Morty Smith is the youngest child Beth and Jerry Smith. While he is currently attends high school, he often goes on adventures with Rick Sanchez, his grandfather. Morty was introduced to Marsha through his older sister, Summer. They have since become friends with Morty developing a crush on her.
Hunson Abadeer is the ruler of the Nightosphere and Marsha's father. Their current relationship is currently strained. They don't really see eye-to-eye with their biggest disagreement coming from their history. While Hunson wants to move on from it, Marsha is haunted by it.
Marceline Abadeer is the oldest of Hunson Abadeer's children and Marsha's older sister. Due to Marsha's lack of a mother figure and the fact that Hunson sucks as a parent, Marceline has taken it upon herself to be a parental figure for Marsha in her own way.
Stolas is a goetia prince. As someone who has a huge interested in magic, Marsha was very interested in the magic Stolas was knowledgable in. Stolas would end up taking Marsha in as an unofficial student and has started to see a lot of his own daughter in Marsha.