'G-Power, or Gs' (グラビティ gurabiti), is the basic measure of a Bakugan's current level of power.
The G-Power may be affected by Ability Cards and Gate Cards. It is found on the inside of a Bakugan in white or black writing. G-Power is also affected by Bakugan Trap, Battle Gears, BakuNano, Bakugan Mobile Assault, Battle Suits, Mechtogan, and Mechtogan Titans. Sometimes it can increase/combine when a friend comes to join in a battle (Ability effect).
When purchasing a Bakugan, the G-Power for the open Bakugan is usually covered with a grey sticker to stop customers from only purchasing strong Bakugan although sometimes the sticker is removed, fell off or is missing completely.
- The highest G-Powered Bakugan is a 2007 G Neo Dragonoid made of pure steel. It was won by Christopher Ruff during the Baku-Con Championship as one of the prizes.
- 1000 G Neo Dragonoids were given out to each of the Baku-Con semi-finalists, 36 in all.
- In the anime, the term of G-Power is used in the first, second, and the first half of the third season. They are not seen in the second half of the third season and not used in Season 4, up until End of the Line.