User blog comment:Aidanthehedgehogisawesome/Sonic Boom Shadow is Mephiles from Sonic 06/@comment-3005395-20150507002046

Personally while I think that you had an interesting overall idea, it is very plain to see that this is not actually true. Sonic Boom takes place in a whole other continuity than Sonic 06, so that makes about half of the "evidence" false. Mephiles has a different color scheme and doesn't even have a mouth.