Marsha has autism, anxiety, CPTSD, OCD, and depression. In addition, Marsha is blind in her left eye and walks with a subtle limp due to an injury she got on her left leg.
Marsha has the ability to sense other demons or an object with demonic power.
Aside from reading, Marsha has pursued a number of other hobbies: sewing, knitting, restoring toys, crochet, and embroidery.
For a few hundred years, Marsha went after the worst abusive parents she could find and has since stopped.
Marsha collects stuffed animals with her favorite toy being Mr. Cottontail, a brown stuffed rabbit that was passed down to her through her mom.
Marsha loves animals, often caring for whatever sick or orphaned ones she comes across. She has a large number of pets, who you can read about here.
I’m only willing to ship Marsha with those close to her physical age and with those who are or have the possibility of being immortal.
In terms of magic, Marsha is strong, roughly edging out Marceline in terms of power. Marsha is also knowledgable when it comes to weapons with her weapon of choice being the Night Scythe, a scythe infused with dark magic that gives her a power boost in battle. Please keep this in mind during fight threads.
Marsha is dead in the canon Adventure Time universe, having died when she was a small child. Grief stricken, Hunson Abadeer went to Prismo where he wished for Marsha to be alive. The wish would go on to create a massive divide in the multiverse, creating universes parallel to the ones in the canon Adventure Time multiverse. And since this was a Prismo wish, there was a monkey paw in effect where while Marsha was now alive, she would not be on good terms with Hunson.