- This article is about the Takara Tomy version. For the Hasbro version, see Layer Base - Union (Hasbro).
Union (ユニオン, Yunion) is a Layer Base released by Takara Tomy as part of the Burst System as well as the Gatinko Layer System. It debuted in Japan with the release of the B-150 Booster Union Achilles Convert Xtend+ Retsu on September 21st, 2019.
In-depth information for Takara Tomy's Union Layer Base will be placed here once drafting has been completed for it. Please be patient.
- B-150 Union Achilles Convert Xtend+ Retsu
- B-164 Random Booster Vol. 20 - 06: Union Spriggan Outer Quick' Zan
- B-00 Union Achilles Convert Xtend+ Retsu (Holy Sword Ver.) (CoroCoro Exclusive)
- B-00 Union Diabolos 00Expand Bearing (Super King Dragon Ver.) (wbba. Store Exclusive)