A Dark Energy surge right after seeing the Portal Location… I don't know how many are stationed there but at least we can expect more than two. It's the most important passageway for them. If it was closed, they would be trapped in this world. They could probably swim in the Outer Space and find a way back to their world or they could wait for one of the six Great Ones to open up another Portal. But even then, they had to wait for long before it could allow them to pass through it…
"Finally. It's the last stop."
Boris somewhat exhaustively said as he looked onto the Zone we're about to approach.