Mecha Sonic is an antagonist of Super Mario Bros DX. he will be revealed as the true main antagonist of the comics.
Mecha Sonic is another antagonist of Super Mario Bros Dx. he attacked 5 of Bowser's units.
In Mario Bros Z he was created by Dr. Eggman until he went bezerk and wild. he attacked 5 units of Bowser when they found a star bit.
it was reveald that he was almost training from Merlon to stop the evil ones. knowing they took over the world in future.