Kreesos is an adult golden dragon who existed before the Cataclsym. When all the dragons were called to go away, she remained in Vesta Field. When the Cataclysm came - she revealed her true self - extending her wingspan as far as she could in front of Vesta Field as the fire and thunder from the Cataclysm roared towards her. She perished in the effort to save the town (and her three eggs). Her spirit bound to the temple of Habbakuk, and when Vesta Fields was struck, the world cracked open, and Vesta Field collapsed nearly 600 feet before the world sealed most of it. 

Kreesos' scale was found near her three eggs, which had been fossilized by the Cataclysm, by Clang Zoop. Clang had given it to another gully dwarf named Tegaru in hopes of winning her love; but when Tegaru went to the temple (of Habbakuk) in Gully Town, she saw a spectral golden dragon who'd given her a mission. Tegaru returned the scale to Clang and departed without explaining anything other than she had an important mission.