Board Thread:General Discussion/@comment-24074103-20131204160455/@comment-477304-20131208203444

Tomison wrote: And it can't be from rage because Knuckles will have to be mad for all of these attacks and it was never stated that he was ever mad during these attacks.

It's never stated that it's fire either.

His moves are unlikely to contain fire in Sonic '06, because if you compare his special effects to Blaze's fire attacks, they look very different.