A BakuCore is a metal, hexagonal shaped tile that empowers Bakugan and allow them to transform from closed to open ball form in the Bakugan Battle Planet game. It is the replacement for the metal Gate Cards from the Legacy Series. BakuCores are only to be used with Battle Planet Bakugan (which are 36mm sized) and it is possible to pick up two BakuCores at once. Additionally, you are allowed to mark the underside of a BakuCore with markings/stickers as long as the text isn't covered.
In the gameplay, players must use six BakuCores (two for each Bakugan) and the symbols on the BakuCores must match the BakuCore symbols with those on the player's Character Cards.
The Back side of BakuCores contain their types, which are:
Some Character Cards and Evo Cards ability/effect may show the symbol of the BakuCore such as or . A Character Card could have an ability that says ": +200 ", which means if you land on a Fist BakuCore, then your Bakugan gets +200 B-Power.
Bakugan: Armored Alliance introduces sixty-nine more BakuCores, keeping the five Core designations from Battle Planet. BakuCores also underwent a redesign, now more resembling their Takara Tomy counterparts from Battle Planet. These Cores can be mixed and played alongside Battle Planet Cores.
BakuCores exist in the Bakugan Reboot anime as lit up hexagonal tiles on the Hide Matrix. Brawlers can grab and throw these tiles onto their Bakugan in order to boost their B-Power. The tiles are colored to correspond to the Faction they boost.