The Balance Badge is a badge with the shape of a modernized Taijitu, symbolizing the concept of Yin and Yang balance. As per normal flair standard, male characters wear it on their chest, while females wear it either on their skirt, or (in EBF4 only) on their hair if it is equipped in the third Flair slot.
The Balance Badge provides a small boost to several stats when worn, with specifics varying between games. As such, it makes for a useful default Flair, working in just about every scenario to help shore up the stats of a player with a spare Flair slot. Its upgrade recipe also only requires 2 materials with opposing themes in equal quantity, as a homage to its theme of balance.