The Battle Sisters (バトルシスター Batoru Shisutā) are a series of cards that include "Battle Sister" in its card name exclusive to the Oracle Think Tank clan. They were first introduced in Booster Set 1: Descent of the King of Knights, they received their first support in Extra Booster: Celestial Valkyries, and further support in Extra Booster: Mystical Magus, G Booster Set 5: Moonlit Dragonfang and G Character Booster 2: WE ARE!!! TRINITY DRAGON. They tend to focus on hand and field advantage, typically through superior calling more Battle Sisters and card drawing effects.
Who are the Battle Sisters?
An agent force of the Battle Order "Sanctuary Guardians" that was secretly set up by the Oracle Think Tank Corporation in order to capture or kill criminals and unscrupulous companies. The agents are usually dressed up as nuns because ostensibly they are affiliated to the "Church." While the members are all excellent combatants and magic users, there are unexpectedly a lot of members with a quirky personality because they were assigned there due to circumstances that cannot be made public.
List of "Battle Sister" cards
|Battle Sister, Assam||Elf||Trigger (Stand)|
|Battle Sister, Chai||Elf||Trigger (Heal)|
|Battle Sister, Churros||Elf||Trigger (Heal)|
|Battle Sister, Compote||Elf|
|Battle Sister, Eclair||Elf|
|Battle Sister, Ganache||Elf||Trigger (Draw)|
|Battle Sister, Ginger||Elf||Trigger (Critical)|
|Battle Sister, Ginger (V Series)||Elf||trigger (Critical)|
|Battle Sister, Kipferl||Elf|
|Battle Sister, Muffin||Elf||Trigger (Critical)|
|Battle Sister, Polvoron||Elf||Trigger (Heal)|
|Battle Sister, Tiramisu||Elf||Trigger (Draw)|
|Battle Sister, Tiramisu (V Series)||Elf||Trigger (Draw)|
|Battle Sister, Waffle||Elf|
|Excite Battle Sister, Bavarois||Elf||G unit (G guardian)|
|Excite Battle Sister, Gelato||Elf||G unit (Stride)|
|Excite Battle Sister, Miroir||Elf||G unit (Stride)|
|Excite Battle Sister, Stollen||Elf||G unit (Stride)|
- All members' names are based on desserts/sweets.
- Though controversial, the Battle Sisters resemble nuns, specifically from religions originating in the West, such as Catholicism, Christianity, and Lutheranism.
- Nuns can also be called sisters.