His character is quite intriguing to me. He's yet to be revealed and that no one (among the S-class heroes at least) has officially met him, if I remember correctly. One of the interesting theories I stumbled upon before is that "Blast" is a moniker given for the person who is the inspiration behind the creation of the Heroes' association because he saved the owner's son—who is actually Saitama and that the S-class rank 1 is actually reserved for him. Thoughts? Any speculations regarding who he really is or what his abilities are?