- The Galva-Matrix is a device held by Galvatron during the Beast Wars II portion of the Generation One continuity family.
The Galva-Matrix is a crystal sphere centered in the chest of the Predacon Emperor of Destruction, Galvatron. It contains Galvatron's spark, his lifeforce. The Galva-Matrix is capable of absorbing Angolmois energy, amping Galvatron's power, and is bonded with the artificial planet Nemesis.
Beast Wars II animation
The Galva-Matrix is what connected Galvatron to the Nemesis and gave him power over the warship. After the Nemesis had absorbed all the Angolmois energy on Gaea, Galvatron channeled the Angolmois into his body using his Galva-Matrix. It gave Galvatron incredible strength and caused him to grow to a towering height. Lio Convoy and Lio Junior combined into the Lengendary Green Lion through their Energon Matrices and used their combined might to siphon off the Angolmois within Galvatron and eject it into deep space within capsules.
Galvatron, not willing to say die, played his final card. He used his Galva-Matrix to set the Nemesis to explode. The Legendary Green Lion then engaged Galvatron in a final battle to which they seemed equally matched. Then, Lio Convoy and Lio Junior separated, disorienting Galvatron for a brief instant, allowing Lio Convoy to stab his Lio-Claw directly through Galvatron's Galva-Matrix, shattering the crystal and killing Galvatron. Then the Nemesis blew up. Dammit.