Board Thread:VS Debates/@comment-31816534-20170606023747/@comment-26374068-20170903152758

Yeah, Sonic called him chubby, I do believe. And while it's technically canon that they've met each other since Mario & Sonic both have no canon, I normally like to exclude it.

Either way, if you wanna count that, then this fight is a lot harder to come by. Mario and Sonic (as well as Luigi and Tails) are friendly rivals.