- This article is about the Hasbro version. For the Takara Tomy version, see Layer Base - Union (Takara Tomy).
Union is a Layer Base released by Hasbro as part of the Burst System as well as the HyperSphere System. It debuted in western countries with the release of the HyperSphere Starter Pack Union Achilles A5 Convert Xtender-H.
In-depth information for Hasbro's Union Layer Base will be placed here once drafting has been completed for it. Please be patient.