Dr.Eggman/Robotnik Re-redesign by Storm-Sketch on DeviantArt

U.P-Verse Eggman/Robotnik Redesign by scott910 on DeviantArt

Dr. Robotnik/Eggman redesign by NovaProspector on DeviantArt

Storm-Sketch - Hobbyist, General Artist

Sonic Cosmic Eternity - Eggman redesign concept by HeyItsFia on DeviantArt

Eggman/Robotnik redesign by Nerfuffle on DeviantArt

Storm-Sketch - Hobbyist, General Artist

How powerful is Dr. Eggman? - Quora

Robotnik Redesigned by XaviorTheLycan on DeviantArt

Dr. Eggman (Sonic the Hedgehog 2 Redesign) by AzuriteC on DeviantArt

Scurvyverse Eggman redesign by Scurvypiratehog on DeviantArt

E-123 Omega redesign doodle by zeiram0034 on DeviantArt

Rise of the Eggman by Scurvypiratehog on DeviantArt