Ok. After reading your previous response and discovering that Metal and Silver Sonic are supposedly two different entities, I headed to the profiles of the characters. I read through them, but I’m still confused. I thought Metal Sonic was the name for the character in Sonic 2 that comes back in Sonic & Knuckles which Knuckles then defeats. Now I see that that was really Silver Sonic. But why would Dr. Eggman build 2 robotic Sonics? I thought they was only one.
To explain Silver Sonic was made in Sonic 2 to be a boss, but being beaten so easily Robotnik redesigned it to the Silver Sonic MKII. It’s believe to be a remake because they both have the same basic moves and attacks. The Hyper Metal Sonic was made to be the ultimate Sonic robot matching speed and strength. – Ron Prower