First Referenced:
Our Final Acts (Final Part)
Amber Four was one of the original ten Branch Worlds created as part of the shield structure built by The First World and the Brownshirts. Prior to its destruction, Amber Four was used to try and strengthen the Outer Shield protecting the human populated section of the multiverse. Amber Four was completely obliterated due to the overloading of its shield generation systems, which exploded as a result. Danny noted in shock that the entire planet was gone due to the explosion.