Depending on which version
-Turning others into robot slaves losing their free will and never turn to their organic forms.
-Killing som many people, he kills all of Archie Charmy's family and People and doomed his own kind.
-Destroying Knothole village.
-Destroy the environment of Mobius trying to make it unable to live on the planet.
-Trying to rewrite all of the reality where Sonic is Dead or doesn't exist.
-Put bombs inside his guards where he can kill them off with his command.
-Trapping animals into Robots, using them as a power fuel
- Creating the Death Egg to take over the planet and destroy environments
-Creating Eggmanland (one of the hardest levels in Unleashed)
-Destroying half of the Moon
-Stealing the Sol Emeralds with Eggman Nega dooming Blaze's world in Rush
-Taking over the world in Forces and creating the Metal Virus
-Unleashed Chaos to destroying Station Square
-Trying to Kill Sonic's friends
-Both enslaving people
-Using the Chaos Emeralds for any evil plot
There are more to list