Iyashi Sokuza, also known as the hero Hax, is the No.91 Pro Hero. She does not belong to an agency and rarely works with other heroes. Despite this, she can often be seen at The Blossom agency, most likely due to her friendship with Bladed Blossom.
Hax's hero life is pretty uneventful, but it's worth noting that she's one of the few heroes that fought Stain and lived to tell the tale.