Rosalia was born and raised in Crater Town. She lived here with her father and two younger siblings. As a child, she was always a very talented individual, excelling at using her Alloy Weaver powers from a young age. With so much skill, she even helped her brother and sister to maximise their potential, essentially taking time out of her day to tutor them due to their father always being busy. As the oldest sibling, she was practically a step-in mother, mature beyond her years and always willing to help. Growing up, this family remained incredibly close to one another and Rosalia feels proud to have watched her younger siblings become everything she knew they could be. She, however, had put her life on hold for far too long, just to take care of her brother and sister. After they both got jobs and left home, she found herself lost, not knowing what to do. Eventually, she chose to move on, to find the perfect job and help even more people. She became a metalworker, ideal for her weaver abilities and a craftswoman, where she would make things tailored to individuals' needs. Settling into this new environment was a huge step forward for her and provided a challenge, something that took her mind off the fact her siblings were all grown up and no longer needed her. After a few years at this job, Rosalia met a man, Zephyros. At first, he was just a customer, but soon he became a regular, someone she would see weekly. Weekly became daily and the two grew very close. Eventually, they became partners and even had a child together, a girl they named Kelsey. Nowadays, Rosalia finds herself juggling life between her job and being a mother, as she desperately tries to find time in the days for both. At least her partner, Zephyros, is supportive and helps out all he can.