Regeneration

Regeneration is an ability and a metamorphosis which Doctor Ivo Robotnik is capable of, though he has only performed this transformation only once in Sonic the Comic during Issue 21 to 22.

It is an ability he can perform at will when he renews himself with physical (as well as fashion) changes. The process is when Robotnik incases himself in a giant egg, this will cause green fumes

History
Apparently serving as Robotnik's image consultants, Thomas and Miller noticed that the people didn't like Robotnik and felt he should get a complete make-over. Robotnik kicked them out of his office for suggesting it (even throwing his phone and lamp at them as they fled), because as a merciless, power-crazed dictator he didn't care whether people liked him or not. Nevertheless, Robotnik decided that his current body had "served its purpose" and that it was time for a change, leading him to encase himself in a giant egg and evolve into his final form (resembling the Adventures of Sonic the Hedgehog version of Robotnik).

Process
The process begins with Robotnik generating a barrier around himself which will become egg like. It is unconfirmed if this egg is indeed an actuall eggshell nor the change that happens within the egg. However during this state Robotnik needs time to transform. during this the egg will give off green fumes. When it is time, Robotnik will break the shell to hatch out of the egg in his new form.

While he will have a new body, his signiture traits such has his dark eyes, obesity, baldness and ginger mustache will remain.

His clothes are also included in the transformation, since before he was wearing a uniform simular to his classic SegaSaturn counterpart, but later issues started wearing a uniform commenting his AoSTH counterpart (Which he began to wear around issue 18.

After the process his clothing changed to that of what is AoSTH counterpart would wear including gloves which he wasn't wearing before.

Trivia

 * "Regeneration" is not the StC canon name for this ability as the transformation was nenver named.
 * The ability is simular to Regeneration from the long running British TV show Doctor Who.