Jay March (TROPR)

Jay survived an incident in which two of her friends died. She miraculously survived, but she was left traumatized. She's likely fine now. She mourns the loss of her friends, but remains protective of her younger brother, Dino, whom she loves dearly.

She's a dog. She's a Cavalier King Charles Spaniel, Blenheim color. She has fluffy, drooping ears that reach down to her shoulders, and her face is white, but she has beige circles near her black, button-like eyes. She has a triangular, black dog nose. She wears a Chucky Halloween costume, from the horror movie, but that's only for Halloween; otherwise, she can wear regular T-shirts or shorts. In the middle of her costume, there's a big letter "J," referring to her name, Jay. She has small, white hands, and they're also soft. She has white paws. She's quite fluffy all over, and she also has a small, fluffy tail that looks like a lump. She's been 18 years old since the incident.

Jay was born in November 1972 to Marvin March and an unseen mother, who may have been a penguin. At one point, her father tells Jay that she once had an aunt, but she doesn't learn this story until later in life. Later, Jay does something with a lighter, causing Marvin to forbid her from bringing a lighter. Apparently, when Jay was eight years old (possibly on Halloween 1980), she pulled some kind of prank that Marvin mentions many years later.

Jay is an energetic, rebellious, and rule-breaking girl. She is said to have stolen her father's lighter, despite his orders not to.

For some unknown reason, Jay is obsessed with the Watermans' family history, knowing the entire story even though she's likely too young to truly know it. This means that shortly before the events of the short film in which she debuted, she learned about the Watermans. This confidence and joy in the unknown indirectly leads to the deaths of her friends Ralph and Paco, as well as the deaths of the Watermans.

Jay, aside from a few occasional moments of childish naivety, is relatively intelligent, able to understand things even in the face of uncertainty. For example, she can determine whether Dino is truly him or the Watermans are pretending to be him because Dino repeats a phrase after her, something Dino does earlier in the episode and likely long before—something she, as his sister, would have known. After obtaining Waterman's photo album, she uses her knowledge of the Waterman urban legend to destroy the book, freeing the spirits and ensuring their survival. It's also possible that Jay simply burned the book out of revenge, further demonstrating her rebellious nature.