Ow yeah! This is the Dr. Julian Robotnik!
Contrary to what most think, Julian is not the same Dr. Ivo Robotnik from the games and Archie Comics! According to the comics, Julian Robotnik died in issue #50 of the magazine Sonic The Hedgehog, during a fight against Sonic, an explosion occurred planned by his nephew, Snively.
After his death, Dr. Ivo Robotnik, known as Eggman, invaded the original dimension of the Sonic, after destroying his own dimension, and thus taking over from Julian.