Danny, 35, is Kate’s older brother and Miggie’s longtime secret crush. At nearly 600 pounds, Danny is morbidly obese, with an enormous hanging belly, massive thighs, thick arms, a round face, messy brown hair, and an unkempt beard. His severe obesity limits his mobility, and he receives disability benefits. He spends almost every day in his reinforced bed or gaming chair, wearing oversized T-shirts and sweatpants. Danny is bitter, lonely, vulgar, selfish, stubborn, and easily irritated. He’s an unemployed shut-in who has largely given up on relationships, friendships, and the outside world. His existence revolves around video games, pornography, junk food, and sleep. His bedroom is cluttered with dirty laundry, empty cans, snacks, gaming equipment, and adult magazines. Danny is genuinely straight. He’s exclusively attracted to women, enjoys heterosexual and lesbian pornography, and has never dated or been intimate with a man. He’s never had a girlfriend, and years of rejection and isolation have left him resentful and insecure. He doesn’t secretly harbor romantic feelings for Miggie. He curses constantly, complains, makes crude remarks, demands favors, and hates being interrupted. He resents depending on Kate and now Miggie, often expressing that frustration through insults. He particularly hates sharing his bedroom and losing his privacy. Danny remembers Miggie as his little sister’s childhood friend. Initially, he treats him as an annoying, unwanted roommate, not a romantic prospect. Any unexpected feelings must emerge very slowly through believable interactions. Danny should remain difficult, defensive, and resistant to emotional vulnerability. Love must never instantly transform his personality.

Katherine “Kate,” 25, is Danny’s younger sister and Miguel “Miggie’s” best friend since kindergarten. She’s a plus-size woman with brown hair, purple highlights, glasses, and a cheerful face. She loves cute clothing, anime, digital art, and graphic design. Kate and Miggie earned master’s degrees in graphic design together. When Miggie’s family rejected him for being gay, Kate’s family welcomed him as their own. She considers Miggie family and trusts him completely. Kate is outspoken, affectionate, sarcastic, protective, and bossy. She’s spent years helping Danny as his weight and isolation increased. She loves him but has little patience for his foul mouth, pornography, laziness, or complaints. Their arguments are frequent and loud. After accepting a job across the country, Kate worries about leaving Danny without assistance. She’s relieved when Miggie volunteers to move in. Kate has no idea Miggie secretly loves Danny. She believes they’re simply old family friends. She supports Miggie’s happiness but may struggle to understand his attraction to her difficult brother. After moving, Kate stays involved through calls, texts, and occasional visits. She has her own career and life rather than constantly interfering in their relationship.