User blog comment:Aidanthehedgehogisawesome/Sonic Boom Shadow is Mephiles from Sonic 06/@comment-477304-20150429234210

I don't think Mephiles specifically hates friendship, I don't recall him saying so.

Shadow uses moves in battle that he's used in previous games. Not Mephiles' moves.

Mentioning similarities to appearance makes no sense because Mephiles purposely looks like Shadow.

Sorry, but you have no evidence to support this theory.