A side story that will develop the hidden side of the main story and will depict Mass-Divers torn between admiration and grief towards the power of unofficial GBN tools and Break Decals. It is divided into two stories - "Before" represents the time before Riku played GBN and "After" represents the time after. Over time, the ideas of the characters and the appearance of their Gundams changes.
- Emo Yumesaki (Diver Name: Onoko)
|Anime||Gundam BD Prologue | Gundam BD - Episode Listing | Gundam BD Re:RISE - Episode Listing|
|Manga/Photonovel||Gundam Build Divers Break | Gundam Build Divers GBWC | Gundam Build Diver Rize|
|Gunpla||High Grade Build Divers | High Grade Build Custom | High Grade Petit'gguy | High Grade Build Divers Re:RISE|
|Other Timelines||Advanced Generation | After Colony | After War | Anno Domini | Build Fighters | Correct Century | Cosmic Era | Future Century | Mars Century | Post Disaster | Regild Century | SD Gundam | Universal Century|