Changes

{{nihongo|'''Rock Hammer'''|ロックハンマー|Rokku Hanmā}} is a [[Bakugan Battle Gear|Battle Gear]] used by [[Jake Vallory]] in'' [[Bakugan: Gundalian Invaders]]''. It first appeared towards the end of the [[Bakugan Battle Brawlers: New Vestroia|previous season]], where a digital clone was used by [[Spectra Phantom]] to test [[Drago (Dan Kuso)|Drago]]'s Battle Gear.

Rock Hammer first appears in ''[[Fusion Confusion]]'' as a digital clone used by [[Spectra]] along with [[Swayther]]. Spectra attached it with [[Coredem]] and attached [[Swayther]] to [[Hawktor]]. Later, it was defeated when [[Drago (Dan Kuso)|Drago]] learned how to use his [[Battle Gear]].