Bungie spent time building a customizable character. I did participate in the beta but only for a day. I don't remember seeing the option to hide/remove the helmet on humanoid and awoken character models. Granted I did not look but one was not easily visible. If there is a way that's great! If not I ask bungie to please not waste the time you've spent creating and the time we will spend customizing something that will never be seen. Thank you for reading.