Board Thread:Questions and Answers/@comment-30751547-20170207174415/@comment-124.13.243.49-20171230112835

Blast only beat Elder Centipede to the brink of death while Saitama killed it oneshot. Actually I have crazy theory where Saitama become a villain and the last hero that he will fight is Blast, don't be a prick it just a theory.

There's also theory about Blast disguising himself as one of the side character though.