Guǐ Duó Tiān Gōng

Guǐ Duó Tiān Gōng (鬼奪天工, Ki Datsu Ten Kou, "Ghost Seizing Heavenly Crafter") is a supporting character in Thunderbolt Fantasy. He is responsible for creating Lóu Zhèn Jiè's prosthetic arm and returning him to Xī Yōu.

Story
Little is currently known about Guǐ Duó Tiān Gōng's life before his exile. He is a wizard who lived in Xī Yōu before winding up in a plane that exists beyond known time and space. According to him, he was planning on opening a portal to the Demon Realm in order to learn its secrets. It's possible that that same plan is why he ended up trapped between dimensions.

Season 3
When Lóu Zhèn Jiè accidentally comes in contact with one of Xíng Hài's scrying mirrors in the Void Junction, he is transported to the same realm Guǐ Duó Tiān Gōng resides in. Guǐ Duó explains how he intends to open a portal back to Xī Yōu. In exchange for Zhèn Jiè's help with this plan, Guǐ Duó builds a prosthetic arm for him. The hand of the prosthesis can be launched at opponents, and the entire arm can be transformed into a powerful drill-like sword that is capable of absorbing magical energy.