Metal Sonic is one of the big fighters in this league and is not to be underestimated. Rayquaza may be a cool dragon but he can’t take on the power. Metal Sonic has the ability to transform into Metal Overlord, which is his strongest form. In this form, he was able to take on multiple opponents who were moving at a tremendous speed and his durability is off the charts. Rayquaza wouldn’t be able to match his speed or sheer ferocity and while he has a lot of battle experience, Metal Sonic’s AI is too advanced and he would be able to make plans to defeat him. Metal Sonic wins.
A link to the original image is below and This illustration was created by ToaAntan.
http://toaantan.deviantart.com/art/Metal-Overlord-vs-Rayquaza-164743360
DReager1.com 
It’s no contest. Robot replica vs Lord of the Skies? Rayquaza could destroy Metal Sonic in one Draco Meteor
But Metal Sonic has the massive speed advantage. In Sonic Heroes he copied the data of all the playable characters. Plus with Metal Sonic’s Metal Overlord form he was able to fight against 2 Super characters!
Hey there, this is ToaAntan of DeviantART, the artist of the piece you used to illustrate this poll! (Thanks for featuring my work!) Here’s several good reasons Metal Overlord (Not simple Metal Sonic) Would be able to defeat Rayquaza:
1: Superior speed
2: Chaos Control
3: Massive amount of weaponry
4: Massively intelligent A.I. system capable of learning from previous battles and attacks and using them against its foes
Hi there ToaAntan and welcome to the blog! That was definitely a great piece that you created so I definitely give it a thumbs up! I created this post a long time ago which is why I didn’t credit you for the image. Regrettably, I didn’t think to do that until recently when I used art for the battles. I have updated the post to give a link to your post and made sure to put your name as the creator. If you notice anymore images from your site on this blog, feel free to let me know and I will update it accordingly.
Also, I definitely agree with your reasoning. Metal Sonic was insanely powerful in his Overlord form and he was facing 3 Super characters after facing the other 9 in his Madness form. That’s definitely a lot of feats right there and he definitely is one of the smarter characters in the franchise!
Guys.common.rayquaza can go around earth in 2 seconds.and i dont even know if thts his top speed
He’s definitely a fast fighter!
Metal sonic can reach light speed instantly which is 1 seconds metal sonic can keep up with sonic that can run to recover time and space
I say Rayquaza but it’s a tough call!