Dr. Robotnik (Sonic Satam)

Legends of The Multi-Universe
Like all villains of Megatrons group this merged universe had evil winning in its favor, the balance of good and evil breaking. Dr.Robotnik had presumably killed his main hero Sonic The Hedgehog with help from the other villains then leaving Tails Prower for dead as the satisfaction of destroying his sworn enemy was enough. Dr.Robotnik was seen conversing with the other villains on how The Children of The Autobots should be dealt with. He is one of the few villains like Emperor Zerg, Sauron, and Darth Vader to never be sent to battle the new heroes of this story.

Defection
Robotnik and the non-disney villains that no longer wished to be Galvatrons servants left The Children of Megatron to help the Disney Family and The Children of The Autobots fight against Galvatrons forces.