Prime Minister Glory's grown children, currently inside the system and named by the AI as leverage against him.
Closing its warning after blocking the assassination attempt on Carl, the Dungeon AI tells Glory that he may be relieved not to be in this system himself — but that he should be very, very worried about his adult children, who are.
The threat is left entirely unelaborated, delivered alongside the reminder of what happened to The Mantids and the declaration that there will be no more warnings.
Hostages by implication, named by the AI to make its warning to Glory personal.