i have a theory reguirding them
eddie and cindy were suppose to be the icon but i think the way there gonna treat them "not being there" is that LT has always been part of universal and they did fit into the prophacy so they abandoned and used things that fit into it aka jack and caretaker.
as for bm my guess is they thought she was the vengence demon due to mirror reflecting light but they were wrong so the used us to stop what they unleased because if not mistaken we never found out who sent her, her grandmothers box
and if not mistaken HHN 14 was about a portal right?