Firenze is a ten year old boy from an alternate reality Xanth which is fifty years into current Xanth's future. He has a temper which sets off his fireworks talent. He was brought to current Xanth by Asrtid, Fornax, and Dysnomia along with Squid, Santo, Win, and Myst. The children found when they are together, they are connected. Astrid and Fornax were trying to find a family to adopt him.
Astrid and Fornax took Firenze across Xanth to find a couple to adopt him. She thought Laser and his wife would do, however it was not a good match. Astrid and Art adopted him after they were married.