It all started when Dr. Ovi Kintobor turned into the evil Dr. Ivo Robotnik.
no, because shadow was a creation of dr. robotnik and silver was just a hedghog from the future sonic only has one brother and that is manic
there are alot of bosses with dr robotnik, and there are a few games called sonic the hedgehog, please specify.
Sonic the Hedgehog (Sega Genesis): Four crushers, one of which contains Dr. Robotnik. Sonic 2 (Sega Genesis): Metal Robotnik Dr. Robotnik's Mean Bean Machine: Dr. Robotnik Sonic CD: Robotnik in a sphere with spinning metal plates going around it Sonic 3: Robotnik with a giant metal claw Sonic & Knuckles: Metal Robotnik Sonic 3D Blast: Miniature Death Egg Sonic Adventure: Perfect Chaos Sonic Adventure 2: Biolizard Sonic Heroes: Metal Sonic Monster Sonic Unleashed: Dark Gaia
There is NO evidence that states that Dr. Robotnik created Sonic. But evidence does state that his grandfather, Prof. Gerald Robotnik, created Shadow.
Dr. Robotnik
Dr. Robotnik.
No but he likes Dr Robotnik
dr. ivo robotnik
The main villain is Dr. Robotnik/Dr. Eggman.
That depends on the canon: In the Fleetway Sonic, Dr. Ovi Kintobor is who would become Dr. Ivo Robotnik due to his machine going belly up. In the SatAM and Archie Sonics, Robotnik's real name is Julian Kintobor. Also in the Archie Sonic, the Moebeus conterpart of Robotnik is called Kintobor. Note that Kintobor is Robotnik spelled backwords.
So far it's only Modern Sonic, Classic Sonic, and Dr. Robotnik/Eggman.
Sonic the Hedgehog Dr. Robotnik for oodles.