From Wiki:
In the "Rise of the Cybermen"/"The Age of Steel" two-part story, the Tenth Doctor crashes down into a parallel universe where the Cybermen are being created on modern-day Earth. These alternate Cybermen were created as an "upgrade" to humanity and the ultimate move into cyberspace, allowing the brain to survive in an ageless steel body. These Cybermen also referred to themselves as "Human Point 2 (Human.2)" and "deleted" all those deemed incompatible with the upgrade. They could electrocute humans with a touch.
These Cybermen were created by John Lumic, a terminally ill and insane genius whose company, Cybus Industries, had advanced humanity considerably. To find a way to survive, he perfected a method to sustain the human brain indefinitely in a cradle of chemicals, bonding the synaptic impulses to a metal exoskeleton. The Cybermen "handle bars" were part of a high-tech communications device called an EarPod. Also created by Lumic, the EarPods were used extensively in the place of MP3 players and mobile phones, allowing information to be directly downloaded into people's heads.
Lumic began to trick and abduct homeless people and convert them into Cybermen, and assassinated the President of Great Britain after the President rejected his plans. Using the EarPods, Lumic took mental control of London, marching thousands to be cyber-converted. He was betrayed by an old friend who damaged his wheelchair's life-support systems. He had told the Cybermen that he would upgrade 'only with my last breath' and since that moment was at hand he was involuntarily upgraded into the Cyber-Controller, a superior model of Cyberman. However, the Tenth Doctor and his companions, having accidentally landed on the parallel Earth, managed to foil his plans. They freed London from mental control and disabled the Cybermen's emotional inhibitors, causing them to go insane and in some cases explode. Lumic himself fell to his apparent death into the burning remains of his factory. A human resistance group, the Preachers, then set about to clean up the remainder of Lumic's factories around the world.
These Cybermen reappeared in the 2006 season finale "Army of Ghosts" and "Doomsday". It is to be noted that these Cybermen also use energy weapons built into their right arms. However, in "The Age of Steel" after the conversion sequence, the newly created Cybermen can be seen to have the retractable weapons in place after exiting the conversion chambers. Having infiltrated that world's version of the Torchwood Institute and discovering a breach between universes caused by the passage of an interdimensional void ship, the Cybermen used it to invade the Doctor's universe. However, the void ship's users, the Daleks, also revealed themselves, leading to all-out war across London with mankind caught in the crossfire. Eventually, the Doctor re-opened the breach, causing the Cybermen and Daleks (who had been saturated with background radiation from the Void) to be sucked back into it. The breach then sealed itself, leaving the Cybermen and Daleks (except the Cult of Skaro, who used their emergency temporal shift function to escape) seemingly trapped in the Void forever.
For various reasons I actually have a photo of Lumic on my profile......(should you wish to remind yourselves)