Silver Sonic v3.0 was one of many robotic duplicates of Sonic the Hedgehog created by Dr. Eggman. A modified and larger version of Silver Sonic v2.0, Silver Sonic v3.0 was first deployed to attack the invaders of the Death Egg Mark 2. Similar in design to the first model, it's massive size is compensated by the ability to spin into a ball like Sonic and engage the blue hedgehog in hand-to-hand combat while deflecting most of his attacks. Another model was later deployed against Team Fighters.
Guarding the New Death Egg (v3.0)
After Dr. Eggman launched his EggDome into the sky as the new Death Egg Mark 2, Sonic and Princess Sally Acorn successfully invaded the gargantuan station. Dr. Eggman then told the two through a speaker that, in order to have an audience with him, they would have to prove that they still were a challenge. Silver Sonic v3.0 then burst through the elevator they had taken, and Sonic eagerly fought his giant robotic self. The battle turned out to partly be a distraction, as Dr. Eggman then launched his new weapon on Mobius while Sally was gunned down by a hidden cannon. Hearing the shots, Sonic took a blow from Silver Sonic while distracted, and was unable to do anything for Sally as the world turned white... (StH: #225)
After the world had been restored and taken slightly back in time, Silver Sonic was still engaged with Sonic in battle. Sonic then spin-dashed Silver Sonic off balance as he had just seconds to save Sally, but the massive robot quickly recovered. Silver Sonic then pursued him down a hallway, eventually taking the turret shots originally meant for Sally, and was believed destroyed. Silver Sonic survived the blasts with heavy damage however, catching up with them in the World-Roboticizer's chamber, and worked in tandem with Metal Sonic in a renewed fight against Sonic. Once the Roboticizer was fired though, both robots got caught up in the energy of its beam and exploded. Silver Sonic was completely destroyed by the blast and its remains were then dumped out of a garbage chute by Egg Mites soon after. (StH: #230, #231)
Attacking Feral Forest (v3.1)
The third Silver Sonic variant was rebuilt as v3.1 and attacked Sonic the Hedgehog in Feral Forest when Sonic tried to stop Mecha Sally from attempting to assassinate her brother and his family. Eventually, T-Pup assisted Sonic by using a device on its head to place Silver Sonic in a type of stasis. Later, the citizens of Feral Forest were seen holding Silver Sonic's arms with rope, providing the assumption that it was destroyed or dismantled, as Sonic, Tails, and Amy helped clean up. (StH: #239)
Silver Sonic v3.0 did not have any personality. It busted through a tiny entrance that was an elevator and proceeded to fight Sonic the Hedgehog without hesitation and pursued him relentlessly despite after taking heavy damage, making this robot most likely just a mindless weapon. (StH: #225, #230)
Silver Sonic v3.0 is a perfect blend of its previous incarnations, combining size and power with speed and maneuverability. Like many Sonic robots, it as the ability to replicate many of Sonic's moves, including the Spin-Dash. Silver Sonic v3.0 works well with other robots, notably Metal Sonic. (CSE)