|Affiliation||World's Construction Project|
|First Appearance||Chapter 1|
Chain is a short man wearing robes with construction warning signs along the lining. Though he appears bald, he still has a chain attached to the back of his head in the form of a ponytail.
As a Jumbor he posseses inhuman strenght and resilience.
After Genber Diode announced the World's Construction Project he appeared in China, ridding a large construction machine that tore down the Great Wall, reasoning that construction material was better than cultural property.