* BakuCores are small, spherical objects that are used by Bakugan to store their energy. They come in a variety of colors, and each color corresponds to a different element.
* Attribute Cores are special BakuCores that are used by Bakugan to change their attributes. They can be found in various colors, each corresponding to a different attribute.
* Fusion Cores are special BakuCores that are used by Bakugan to fuse with each other. They can be found in various colors, each corresponding to a different fusion.
* Ability Cores are special BakuCores that are used by Bakugan to gain new abilities. They can be found in various colors, each corresponding to a different ability.