Mecha Sonic, Fictional Fighters Wiki

Mecha Sonic (originally known as Metal Sonic) is a robot created by Dr. Eggman for the sole purpose of destroying Sonic. He serves as the primary antagonist for the first saga of Super Mario Bros. Z. After Metal Sonic was created, he fought Sonic in their first battle, and lost. However, he returned faster and more powerful than ever, but was still beaten. Meanwhile, Metal Sonic sneaked into the Death Egg, combined with all of the other Sonic robots, and transformed into the almighty Mecha Sonic

Metal Sonic - Wikipedia

Metal Sonic, Death Battle Fanon Wiki

Transformers: Dark of the Moon (film) - Transformers Wiki

i decided to look at sonic colors ds wiki page since i never seen

Metal Sonic (Classic), Villains Wiki

Characters - SRB2 Wiki

Dr. Eggman/Robotnik - Incredible Characters Wiki

Sonic the Hedgehog - Incredible Characters Wiki

Sonic The Hedgehog Metal Sonic / Characters - TV Tropes

Transformers: Rise of the Beasts (film) - Transformers Wiki

Scratch and Grounder (Adventures of Sonic the Hedgehog